U.S. tax laws are almost as complicated as U.S. immigration laws. They are particularly complex for non-U.S. citizens who reside, even part time, in the United States. “Residence” in the U.S. has a different meaning under U.S. tax law than it does under U.S. immigration law. The impact of U.S. tax law on foreign nationals varies depending on where the individual is from as the U.S. has tax treaties with many foreign countries, though not with all countries. Due to the complexity of U.S. tax law and the large impact it can have on individuals, we recommend that all of our non-citizen clients seek the assistance of a tax professional who is well versed in tax liability for multinational taxpayers.