
What passport and visa rules apply to British passport holders visiting Columbus
Most British nationals can enjoy the benefits of the Visa waiver program to enter the U.S. However, the period of your stay under this visa in America is restricted to 90 days.
When you have intentions to stay for periods longer than 90 days you should apply for a B2 visa. The following web resources are helpful to understand the position better.
http://travel.state.gov/visa/temp/withou
http://www.worldtravelguide.net/country/97/passport_visa/Central-Asia/Georgia.html

