我可以用Visa Waiver Program 入美90天。但是如果我想待久些,请问8老师和皮老师,我需要申请哪种类型的签证?
-What is the purpose you visit US? If you want to be a visitor for tour, you may apply for the B-2 visa in the US Consulate in your country, which allows you to stay in US for up to 6 months, and it can be extended.