opinion: Justice Ginsburg
  delivered the opinion of the Court.
  This ease concerns the time within which a defendant named in a state-court action may remove the action to a federal court. The governing provision is 28 U. S. C. § 1446(b), which specifies, in relevant part, that the removal notice “shall be filed within thirty days after the receipt by the defendant, through service or otherwise, of a copy of the [complaint].” The question presented is whether the named defendant must be officially summoned to appear in the action before the time to remove begins to run. Or, may the 30-day period start earlier, on the named defendant’s receipt, before service of official process, of a “courtesy copy” of the filed complaint faxed by counsel for the plaintiff?
  removal in light of a bedrock principle: An individual or entity named as a defendant is not obliged to engage in litigation unless notified of the action, and brought under a court’s authority, by formal process. Accordingly, we hold that a named defendant’s time to remove is triggered by simultaneous service of the summons and complaint, or receipt of the complaint, “through service or otherwise,” after and apart from service of the summons, but not by mere receipt of the complaint unattended by any formal service.
  I
  On January 26, 1996, respondent Michetti Pipe Stringing, Inc. (Michetti), filed a complaint in Alabama state court seeking damages for an alleged breach of contract and fraud by petitioner Murphy Bros., Inc. (Murphy). Michetti did not serve Murphy at that time, but three days later it faxed a “courtesy copy” of the file-stamped complaint to one of Murphy’s vice presidents. The parties then engaged in settlement discussions until February 12,1996, when Michetti officially served Murphy under local law by certified mail.
  On March 13,1996 (30 days receiving the faxed copy of the complaint), Murphy removed the case under 28 U. S. C. § 1441 to the United States District Court for the Northern District of Alabama. Michetti moved to remand the case to the state court on the ground that Murphy filed the removal notice 14 days too late. The notice of removal had not been filed within 30 days of the date on which Murphy’s vice president received the facsimile transmission. Consequently, Michetti asserted, the removal was untimely under 28 U. S. C. § 1446(b), which provides:
  “The notice of removal of a civil action or proceeding shall be filed within thirty days after the receipt by the defendant, through service or otherwise, of a copy of the initial pleading setting forth the claim for relief upon which such action or proceeding is based, or within thirty days after the service of summons upon the defendant if such initial pleading has then been filed in court and is not required to be served on the defendant, whichever period is shorter.” (Emphasis added.)
  The District Court denied the remand motion on the ground that the 30-day removal period did not commence until Murphy was officially served with a summons. The court observed that the phrase “or otherwise” was added to § 1446(b) in 1949 to govern removal in States where an action is commenced merely by the service of a summons, without any requirement that the complaint be served or even filed contemporaneously. See App. A-24. Accordingly, the District Court said, the phrase had “no field of operation” in States such as Alabama, where the complaint must be served along with the summons. See ibid,
  On interlocutory appeal permitted pursuant to 28 U. S. C. § 1292(b), the Court of Appeals for the Eleventh Circuit reversed and remanded, instructing the District Court to remand the action to state court. 125 F. 3d 1396, 1399 (1997). The Eleventh Circuit held that “the clock starts to tick upon the defendant’s receipt of a copy of the filed initial pleading.” Id., at 1397. “By and large,” the appellate court wrote, “our analysis begins and ends with” the words “receipt ... or otherwise.” Id., at 1397-1398 (emphasis deleted). Because lower courts have divided on the question whether service of process is a prerequisite for the running of the 30-day removal period under § 1446(b), we granted certiorari. 525 U. S. 960 (1998).
  II
  Service of process, under longstanding tradition in our system of justice, is fundamental to any procedural imposition on a named defendant. At common law, the writ of capias ad respondendum directed the sheriff to secure the defendant’s appearance by taking him into custody. See 1 J. Moore, Moore’s Federal Practice ¶0.6[2.~2], p. 212 (2d ed. 1996) (“[T]he three royal courts, Exchequer, Common Pleas, and King’s Bench ... obtained an in personam jurisdiction over the defendant in the same manner through the writ of capias ad respondendum.”). The requirement that a defendant be brought into litigation by official service is the contemporary counterpart to that writ. See International Shoe Co. v. Washington, 326 U. S. 310, 316 (1945) (“[T]he capias ad respondendum has given way to personal service of summons or other form of notice.”).
  In the absence of service of process by the defendant), a court ordinarily may not exercise power over a party the complaint names as defendant. See Omni Capital Int’l, Ltd. v. Rudolf Wolff & Co,, 484 U. S. 97, 104 (1987) (“Before a... court may exercise personal jurisdiction over a defendant, the procedural requirement of service of summons must be satisfied.”); Mississippi Publishing Corp. v. Murphree, 326 U. S. 438, 444-445 (1946) (“[S]ervice of summons is the procedure by which a court... asserts jurisdiction over the person of the party served.”). Accordingly, one becomes a party officially, and is required to take action in that capacity, only upon service of a summons or other authority-asserting measure stating the time within which the party served must appear and defend. See Fed. Rule Civ. Proc. 4(a) (“[The summons] shall . . . state the time within which the defendant must appear and defend, and notify the defendant that failure to do so will result in a judgment by default against the defendant.”); Rule 12(a)(1)(A) (a defendant shall serve an answer within 20 days of being served with the summons and complaint). Unless a named defendant agrees to waive service, the summons continues to function as the sine qua non directing an individual or entity to participate in a civil action or forgo procedural or substantive rights.
  Ill
  When Congress enacted § 1446(b), the legislators did not endeavor to break away from the traditional understanding. Prior to 1948, a defendant could remove a case any time before the expiration of her time to respond to the complaint under state law. See, e. g., 28 U. S. C. §72 (1940 ed.). Because the time limits for responding to the complaint varied from State to State, however, the period for removal correspondingly varied. To reduce the disparity, Congress in 1948 enacted the original version of § 1446(b), which provided that “[t]he petition for removal of a civil action or proceeding may be filed within twenty days after commencement of the action or service of process, whichever is later.” Act of June 25, 1948, 62 Stat. 939, as amended, 28 U. S. C. § 1446(b). According to the relevant House Report, this provision was intended to “give adequate time and operate uniformly throughout the Federal jurisdiction.” H. R. Rep. No. 308, 80th Cong., 1st Sess., A135 (1947).
  soon recognized, however, that § 1446(b), as first framed, did not “give adequate time and operate uniformly” in all States. In States such as New York, most notably, service of the summons commenced the action, and such service could precede the filing of the complaint. Under § 1446(b) as originally enacted, the period for removal in such a State could have expired before the defendant obtained access to the complaint.
  ensure that the defendant would have access to the complaint before commencement of the removal period, Congress in 1949 enacted the current version of § 1446(b): “The petition for removal of a civil action or proceeding shall be filed within twenty days [now thirty days] after the receipt by the defendant, through service or otherwise, of a copy of the initial pleading setting forth the claim for relief upon which such action or proceeding is based.” Act of May 24, 1949, § 83(a), 63 Stat. 101. The accompanying Senate Report explained:
  “In some States suits are begun by the service of a summons or other process without the necessity of filing any pleading until later. As the section now stands, this places the defendant in the position of having to take steps to remove a suit to Federal court before he knows what the suit is about. As said section is herein proposed to be rewritten, a defendant is not required to file his petition for removal until 20 days after he has received (or it has been made available to him) a copy of the initial pleading filed by the plaintiff setting forth the claim upon which the suit is based and the relief prayed for. It is believed that this will meet the varying conditions of practice in all the States.” S. Rep. No. 303,81st Cong., 1st Sess., 6 (1949).
  See also H. R. Rep. No. 352, 81st Cong., 1st Sess., 14 (1949) (“The first paragraph of the amendment to subsection (b) corrects [the New York problem] by providing that the petition for removal need not be filed until 20 days after the defendant has received a copy of the plaintiff’s initial pleading.”). Nothing in the legislative history of the 1949 amendment so much as hints that Congress, in making changes to accommodate atypical state commencement and complaint filing procedures, intended to dispense with the historic function of service of process as the official trigger for responsive action by an individual or entity named defendant.
  IV
  The Eleventh Circuit relied on the “plain meaning” of § 1446(b) that the panel perceived. See 125 F. 3d, at 1398. In the Eleventh Circuit’s view, because the term “ '[Receipt’ is the nominal form of 'receive,’ which means broadly 'to come into possession of or to ‘acquire,’” the phrase '“[receipt] through service or otherwise’ opens a universe of means besides service for putting the defendant in possession of the complaint.” Ibid. What are the dimensions of that “universe”? The Eleventh Circuit’s opinion is uninformative. Nor can one tenably maintain that the words “or otherwise” provide a clue. Cf. Potter v. McCauley, 186 F. Supp. 146, 149 (Md. 1960) (“It is not possible to state definitely in general terms the precise seope and effect of the word 'otherwise’ in its context here because its proper application in particular situations will vary with state procedural requirements.”); Apache Nitrogen Products, Inc. v. Harbor Ins. Co., 145 F. R. D. 674, 679 (Ariz. 1993) (“[I]f in fact the words ‘service or otherwise’ had a plain meaning, the cases would not be so hopelessly split over their proper interpretation.”).
  The interpretation tradition, makes sense of the phrase “or otherwise,” and assures defendants adequate time to decide whether to remove an action to federal court. As the court in Potter observed, the various state provisions for service of the summons and the filing or service of the complaint fit into one or another of four main categories. See 186 F. Supp., at 149. In each of the four categories, the defendant’s period for removal will be no less than 30 days from service, and in some categories, it will be more than 30 days from service, depending on when the complaint is received.
  As summarized in Potter, the possibilities are as First, if the summons and complaint are served together, the 30-day period for removal runs at once. Second, if the defendant is served with the summons but the complaint is furnished to the defendant sometime after, the period for removal runs from the defendant’s receipt of the complaint. Third, if the defendant is served with the summons and the complaint is filed in court, but under local rules, service of the complaint is not required, the removal period runs from the date the complaint is made available through filing. Finally, if the complaint is filed in court prior to any service, the removal period runs from the service of the summons. See ibid.
  Notably, Federal Rule of Civil Procedure 81(c), amended in 1949, uses the identical “receipt through service or otherwise” language in specifying the time the defendant has to answer the complaint once the case has been removed:
  “In a removed action in which the defendant has not answered, the defendant shall answer or present the other defenses or objections available under these rules within 20 days after the receipt through service or otherwise of a copy of the initial pleading setting forth the claim for relief upon which the action or proceeding is based.”
  Rule 81(c) sensibly has been interpreted to afford the defendant at least 20 days after service of process to respond. See Silva v. Madison, 69 F. 3d 1368, 1376-1377 (CA7 1995). In Silva, the Seventh Circuit Court of Appeals observed that “nothing... would justify our concluding that the drafters, in their quest for evenhandedness and promptness in the removal process, intended to abrogate the necessity for something as fundamental as service of process.” Id., at 1376. In reaching this conclusion, the court distinguished an earlier decision, Roe v. O’Donohue, 38 F. 3d 298 (CA7 1994), which held that a defendant need not receive service of process before his time for removal under § 1446(b) begins to run. See 69 F. 3d, at 1376. But, as the United States maintains in its amicus curiae brief, the Silva court “did not adequately explain why one who has not yet lawfully been made a party to an action should be required to decide in which court system the case should be heard.” Brief for United States as Amicus Curiae 13, n. 4. If, as the Seventh Circuit rightly determined, the “service or otherwise” language was not intended to abrogate the service requirement for purposes of Rule 81(c), that same language also was not intended to bypass service as a starter for § 1446(b)’s clock. The fact that the Seventh Circuit could read the phrase “or otherwise” differently in Silva and Roe, moreover, undercuts the Eleventh Circuit’s position that the phrase has an inevitably “plain meaning.”
  Furthermore, the so-called “receipt rule” — starting the time to remove on receipt of a copy of the complaint, however informally, despite the absence of any formal service— could, as the District Court recognized, operate with notable unfairness to individuals and entities in foreign nations. See App. A-24. Because facsimile machines transmit instantaneously, but formal service abroad may take much longer than 80 days, plaintiffs “would be able to dodge the requirements of international treaties and trap foreign opponents into keeping their suits in state courts.” Ibid.
  * * *
  In sum, it would take a clearer statement than Congress has made to read its endeavor to extend removal time (by adding receipt of the complaint) to effect so strange a change — to set removal apart from all other responsive acts, to render removal the sole instance in which one's procedural rights slip away before service of a summons, i. e., before one is subject to any court’s authority. Accordingly, for the reasons stated in this opinion, the judgment of the United States Court of Appeals for the Eleventh Circuit is reversed, and the ease is remanded for further proceedings consistent with this opinion.
  It is so ordered.
  Murphy invoked the jurisdiction of the Federal District Court under 28 U. S. C. § 1332 based on diversity of citizenship. Michetti is a Canadian company with its principal place of business in Alberta, Canada; Murphy is an Illinois corporation with its principal place of business in that State.
  Compare Reece v. Wal-Mart Stores, Inc., 98 F. 3d 839, 841 (CA5 1996) (removal period begins with receipt of a copy of the initial pleading through any means, not just service of process); Roe v. O’Donohue, 38 F. 3d 298, 303 (CA7 1994) (“Once the defendant possesses a copy of the complaint, it must decide promptly in which court it wants to proceed.”), with Bowman v. Weeks Marine, Inc., 986 F. Supp. 329, 333 (SC 1996) (removal period begins only upon proper service of process); Baratt v. Phoenix Mut. Life Ins. Co., 787 F. Supp. 333, 336 (WDNY 1992) (proper service is a prerequisite to commencement of removal period).
  Congress extended the period for removal from 20 days to 30 days in 1965. See Act of Sept. 29, 1965, 79 Stat. 887.
  The second half of the revised removal shall be filed “within twenty days after the service of summons upon the defendant if such initial pleading has then been filed in court and is not required to be served on the defendant, whichever period is shorter,” 183(b), 63 Stat. 101, was added to address the situation in States such as Kentucky, which required the complaint to be filed at the time the summons issued, but did not require service of the complaint along with the summons. See H. R. Rep. No. 352, 81st Cong., 1st Sess., 14 (1949) (“Th[e first clause of revised § 1446(b)], however, without more, would create further difficulty in those States, such as Kentucky, where suit is commenced by the filing of the plaintiff’s initial pleading and the issuance and service of a summons without any requirement that a copy of the pleading be served upon or otherwise furnished to the defendant. Accordingly ... the amendment provides that in such cases the petition for removal shall be filed within 20 days after the service of the summons.”).
  . It ievident, too, that Congress could not have foreseen the situation posed by this case, for, as the District Court recognized, “[i]n 1949 Congress did not anticipate use of faesmile Isic] transmissions.” App. A-23, n. 1. Indeed, even the photocopy machine was not yet on the scene at that time. See 9 New Encyclopaedia Britannica 400 (15th ed. 1985) (noting that photocopiers “did not become available for commercial use until 1950”).
  Contrary to a suggestion made at oral argument, see Tr. of Oral Arg. 6-7, 28 U. S. C. § 1448 does not support the Eleventh Circuit’s position. That section provides that “[i]n all cases removed from any State court to any district court of the United States in which any one or more of the defendants has not been served with process or in which the service has not been perfected prior to removal... such process or service may be completed or new process issued in the same manner as in cases originally filed in such district court.” Nothing in § 1448 requires the defendant to take any action. The statute simply allows the plaintiff to serve an un-served defendant or to perfect flawed service once the action has been removed. In fact, the second paragraph of §1448, which provides that “[t]his section shall not deprive any defendant upon whom process is served after removal of his right to move to remand the case,” explicitly reserves the unserved defendant’s right to take action (move to remand) after service is perfected.
  See, e. g., Fed. Rule individuals in a foreign country).
choices: comity: civil rights comity: criminal procedure comity: First Amendment comity: habeas corpus comity: military comity: obscenity comity: privacy comity: miscellaneous comity primarily removal cases, civil procedure (cf. comity, criminal and First Amendment); deference to foreign judicial tribunals assessment of costs or damages: as part of a court order Federal Rules of Civil Procedure including Supreme Court Rules, application of the Federal Rules of Evidence, Federal Rules of Appellate Procedure in civil litigation, Circuit Court Rules, and state rules and admiralty rules judicial review of administrative agency's or administrative official's actions and procedures mootness (cf. standing to sue: live dispute) venue no merits: writ improvidently granted no merits: dismissed or affirmed for want of a substantial or properly presented federal question, or a nonsuit no merits: dismissed or affirmed for want of jurisdiction (cf. judicial administration: Supreme Court jurisdiction or authority on appeal from federal district courts or courts of appeals) no merits: adequate non-federal grounds for decision no merits: remand to determine basis of state or federal court decision (cf. judicial administration: state law) no merits: miscellaneous standing to sue: adversary parties standing to sue: direct injury standing to sue: legal injury standing to sue: personal injury standing to sue: justiciable question standing to sue: live dispute standing to sue: parens patriae standing standing to sue: statutory standing standing to sue: private or implied cause of action standing to sue: taxpayer's suit standing to sue: miscellaneous judicial administration: jurisdiction or authority of federal district courts or territorial courts judicial administration: jurisdiction or authority of federal courts of appeals judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from federal district courts or courts of appeals (cf. 753) judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from highest state court judicial administration: jurisdiction or authority of the Court of Claims judicial administration: Supreme Court's original jurisdiction judicial administration: review of non-final order judicial administration: change in state law (cf. no merits: remand to determine basis of state court decision) judicial administration: federal question (cf. no merits: dismissed for want of a substantial or properly presented federal question) judicial administration: ancillary or pendent jurisdiction judicial administration: extraordinary relief (e.g., mandamus, injunction) judicial administration: certification (cf. objection to reason for denial of certiorari or appeal) judicial administration: resolution of circuit conflict, or conflict between or among other courts judicial administration: objection to reason for denial of certiorari or appeal judicial administration: collateral estoppel or res judicata judicial administration: interpleader judicial administration: untimely filing judicial administration: Act of State doctrine judicial administration: miscellaneous Supreme Court's certiorari, writ of error, or appeals jurisdiction miscellaneous judicial power, especially diversity jurisdiction