我猜測台灣頂多是在這個Visa Waiver Program裡面而已 並不像加拿大一樣 可以真的不用辦 也不用護照就可以在美國滯留六個月 The Visa Waiver Program allows foreign nationals from certain countries to travel to the United States for business or pleasure, for stays of 90 days or less without obtaining a visa. Travelers admitted under the Visa Waiver Program must agree to waive their rights to review or appeal, as explained in the Waiver of Rights section of the Application screen. See Who is eligible to apply for admission under the Visa Waiver Program? for further information.
For further information refer to § 217 of the Immigration and Nationality Act, 8 U.S.C. § 1187, and 8 C.F.R. § 217.
Which countries participate in the Visa Waiver Program?
Andorra Australia Austria Belgium Brunei Czech Republic Denmark Estonia Finland France Germany Greece Hungary Ireland Italy Japan Latvia Liechtenstein Lithuania Luxembourg Monaco Netherlands New Zealand Norway Portugal Republic of Malta Singapore Slovakia Slovenia South Korea Spain Sweden San Marino Switzerland United Kingdom