(1)
Those arriving via the visa waiver program can't change to another non-immigrant
status unless they leave the country and re-apply.
(2)
Visa Waivers can't be extended like a tourist
B visa unless there is a genuine emergency, in which case the visit
can only be extended 30 days.
Tourist
B visas offer more flexibility than a visa waiver.
(3)
Unlike certain classes of temporary visa holders, visa waiver holders
applying for green cards must leave the country and apply at a U.S consulate
abroad.
Eligible
Visa Waiver Countries (updated
May 2003):
Andorra, Australia, Austria, Belgium, Brunei, Denmark, Finland, France,
Germany, Iceland, Ireland, Italy, Japan, Liechtenstein, Luxembourg,
Monaco, The Netherlands, New Zealand, Norway, Portugal, San Marino,
Singapore, Slovenia, Spain, Sweden, Switzerland, United Kingdom