The cost of living in the U.S. can vary widely by location. Ask your U.S. employer for an estimate of the total cost of living in the community where you will be working.

All visitors are subject to federal and state income tax on U.S.-source income, as well as on most grants and scholarships. In certain cases, particularly if your stay in the United States exceeds a certain number of years, you may be subject to income tax on your worldwide income. The extent of your tax liability for that income, however, varies significantly depending on numerous factors, including your tax status as either a resident or nonresident taxpayer. Tax status is different than immigration status. You may find that you are treated as a nonresident for immigration purposes and a resident for tax purposes.

This is just a sample of what you'll find in the complete USA guide.