Anyone got a list of nations that US citizen isn't allowed to
travel to as tourist? (either banned by the US government
or banned by the destination country's government)


Also... what happens if the person has dual citizenship?
Let's say Mr. Smith has both a US passport and a UK
passport, and he wants to travel to XYZ.(made-up name
of a country) If XYZ does not allow any US citizen to
enter, will Mr. Smith be allowed in by presenting only his
UK passport? Alternatively, if the USA bans US citizens
from travelling to XYZ, will Mr. Smith get in trouble with
the US government by going to XYZ using a UK passport?


Thanks for any info!