How many days per year can I stay in the USA without a visa?

Question

How many days per year can I stay in the USA without a visa?

Answer 1

What nationality are you?  What is your purpose in the United States?

Answer 2

It depends on whether you are from a country participating in the US Visa Waiver Program (VWP - there are currently 27 countries - 90 days or less), or are from Canada/Bermuda (visa exempt for up to 6 months).

http://travel.state.gov/visa/temp/withou...

Answer 3

You normally get 90 days on a visa waiver. As long as you don't abuse this, I guess the correct answer would be 90 days.  Can you arrive more than once a year? Sure. But if you spend too much time in the USA, some inspector is going to be asking you questions about your ties to another country.

Not trying to bust your chops, just tell you what the real world is like.