What happens when a non-U.S. citizen who's been making money from the U.S. moves to the U.S.?
"Its not for US citizens - its for US residents. If the US considers you as a tax resident - you'll be treated the same as a US citizen, regardless of your immigration status. The question is very unclear, since it is not mentioned whether your US sourced income ""from the Internet"" is sales in the US, sales on-line, services you provide, investments, or what else. All these are treated differently. For some kinds of US-sourced income you should have paid taxes in the US already, regardless of where you physically reside. For others - not. In any case, if you become US tax resident, you'll be taxed on your worldwide income, not only the $10K deposited in the US bank account. ALL of your income, everywhere in the world, must be declared to the US government and will be taxed. You should seek professional advice, before you move to the US, in order to understand your responsibilities, liabilities and rights. I suggest looking for a EA/CPA licensed in California and experienced with taxation of foreigners (look for someone in the SF or LA metropolitan areas). Keep in mind that there may be a tax treaty between the US and your home country that may affect your Federal (but not California) taxes."
The United States taxes gifts to the giver, not the receiver.  Thus, in your case there would be no direct tax implications from the receiver so long as you are gifting cash and the cash is in Canada.  If you are gifting capital (stocks, property, etc.), or if you are gifting something that is in the United States (US stock, for example), there may be a tax implication for either or both of you. Your adult child would, however, have to file an IRS form since the gift is so large (over $100k) to create a paper trail for the money (basically proving s/he isn't money laundering or otherwise avoiding tax). See this article in The Globe And Mail which goes into more detail. There are no implications, except that there is a form (IRS Form 3520) that would have to be filed by the U.S. recipient if the foreign gift is over $100,000 (U.S.). But the child would still receive the gift tax-free. The U.S. gift tax would only apply when the Canadian parent makes a gift of U.S. “situs” assets, which are typically only U.S. real estate or tangible personal property such as a boat located in the U.S. For gift-tax purposes, U.S. shares are not considered to be U.S. situs assets. "&gt; It produces billions of deficit every single year and is responsible for unimaginable sums of money going down the drain somewhere in the administration  [At 17.1 percent of GDP, the U.S. devotes at least 50 percent more of its economy to health care than do other countries. Even public spending on health care, on a per capita basis, is higher in the U.S. than in most other countries with universal public coverage.](http://www.commonwealthfund.org/publications/issue-briefs/2015/oct/us-health-care-from-a-global-perspective)  Even with the ""unimaginable sums of money"" going down the drain as you claim - other countries with UH still manage to spend less of their national wealth on taking care of their citizens. Furthermore - any of those countries absolutely *smoke* the US in positive health outcomes with the US coming in [dead last](https://www.forbes.com/sites/danmunro/2014/06/16/u-s-healthcare-ranked-dead-last-compared-to-10-other-countries/#4cdb43f4576f) in terms of both quality and cost.   &gt;pointing a gun at someone and forcing them to pay for your stuff   Welcome to society. I don't agree with my taxes paying for police to defend your home (not my stuff, right?) but I do it because collectively we're both better off." "&gt;When asked what it could mean for the dollar should the oil market move oil trade out of the U.S. currency and into the yuan, Weinberg said the world's transaction currency would suffer ""lesser demand for U.S. securities across the board.""  &gt;""Moving oil trade out of dollars into yuan will take right now between $600 billion and $800 billion worth of transactions out of the dollar…   The key part" If you've got shares in a company that's filed for U.S. Chapter 11 bankruptcy, that sucks, it really does.  I've been there before and you may lose your entire investment.  If there's still a market for your shares and you can sell them, you may want to just accept the loss and get out with what you can. However, shares of bankrupt companies are often delisted once bankrupt, since the company no longer meets minimum exchange listing requirements.  If you're stuck holding shares with no market, you could lose everything – but that's not always the case: Chapter 11 isn't total and final bankruptcy where the company ceases to exist after liquidation of its assets to pay off its debts.  Rather, Chapter 11 is a section of the U.S. Bankruptcy Code that permits a company to attempt to reorganize (or renegotiate) its debt obligations. During Chapter 11 reorganization, a company can negotiate with its creditors for a better arrangement.  They typically need to demonstrate to creditors that without the burden of the heavy debt, they could achieve profitability.  Such reorganization often involves creditors taking complete or majority ownership of the company when it emerges from Chapter 11 through a debt-for-equity swap. That's why you, as an investor before the bankruptcy, are very likely to get nothing or just pennies on the dollar. Any equity you may be left holding will be considerably diluted in value.  It's rare that shareholders before a Chapter 11 bankruptcy still retain any equity after the company emerges from Chapter 11, but it is possible. But it varies from bankruptcy to bankruptcy and it can be complex as montyloree pointed out. Investopedia has a great article: An Overview of Corporate Bankruptcy.  Here's an excerpt: If a company you've got a stake in   files for bankruptcy, chances are   you'll get back pennies to the dollar.   Different bankruptcy proceedings or   filings generally give some idea as to   whether the average investor will get   back all or a portion of his   investment, but even that is   determined on a case-by-case basis.   There is also a pecking order of   creditors and investors of who get   paid back first, second and last. In   this article, we'll explain what   happens when a public company files   for protection under U.S. bankruptcy   laws and how it affects investors.   [...]   How It Affects Investors   [...]   When your company goes bankrupt, there   is a very good chance you will not get   back the full value of your   investment. In fact, there is a chance   you won't get anything back. [...] Wikipedia has a good article on Chapter 11 bankruptcy at Chapter 11, Title 11, United States Code. "This sounds like a FATCA issue.  I will attempt to explain, but please confirm with your own research, as I am not a FATCA expert. If a foreign institution has made a policy decision not to accept US customers because of the Foreign Financial Institution (FFI) obligations under FATCA, then that will of course exclude you even if you are resident outside the US.  The US government asserts the principle of universal tax jurisdiction over its citizens.  The institution may have a publicly available FATCA policy statement or otherwise be covered in a new story, so you can confirm this is what has happened.  Failing that, I would follow up and ask for clarification. You may be able to find an institution that accepts US citizens as investors.  This requires some research, maybe some legwork. Renunciation of your citizenship is the most certain way to circumvent this issue, if you are prepared to take such a drastic step.  Such a step would require thought and planning.  Note that there would be an expatriation tax (""exit tax"") that deems a disposition of all your assets (mark to market for all your assets) under IRC § 877. A less direct but far less extreme measure would be to use an intermediary, either one that has access or a foreign entity (i.e. non-US entity) that can gain access.  A Non-Financial Foreign Entity (NFFE) is itself subject to withholding rules of FATCA, so it must withhold payments to you and any other US persons.  But the investing institutions will not become FFIs by paying an NFFE; the obligation rests on the FFI. PWC Australia has a nice little writeup that explains some of the key terms and concepts of FATCA. Of course, the simplest solution is probably to use US institutions, where possible.  Non-foreign entities do not have foreign obligations under FATCA." But the US has a higher rate than any other OECD country. So you are still taxing profits from money that wasn't made in the US.  Obviously way more complicated, but it's pretty insane. It can be even worse for an individual. Oh, and imagine you'd like to start a sole propietorship overseas as a US citizen. You either renounce or have insane compliance costs. Most people don't see it that way and it may drive me to personally renounce my citizenship even though I would really prefer not to. But I also won't let the crazy over-reach of the US government threaten future financial stability and cost a crazy amount annually just to be compliant.  And yes I know about the FEIE and yes it's significantly more complicated than that for anything other than a simple employee-employer relation with minimal assets. As a relatively recent nonimmigrant visa holder (O1), I was able to open an ETrade brokerage account without problems. I have full tax residence in the USA so have an SSN, and a credit history so it was no problem.  Later, as a greencard holder, I opened IRA accounts with them, too. Again, there were no issues as I had all the information that the IRS paperwork required at hand.