CBP is one of the largest law enforcement agencies in the United States .
It is charged with regulating and facilitating international trade , collecting import duties , and enforcing U.S. regulations , including trade , customs , and immigration .
CBP is one of the largest law enforcement agencies in the U.S.   .
It is charged with regulating and facilitating international trade , collecting import duties , and enforcing U.S. regulations , including trade , customs , and immigration .