Yes US citizens need a visa.
no they dont
No.
Yes, but you need a visa. (US citizens also need a visa for Australia. In fact, everyone except citizens of Australia and New Zealand needs a visa for Australia.)
do danish citizens need a visa to visit Saipan Nothern Marianas
May be Afghanistan is the only friend country for USA, in which US citizens need Visa to travel.
No. U.S. citizens can visit and stay in Hungary for up to 3 months without a visa.
Yes, US citizens need a Visa to enter and exit Costa Rica.
Yes, you still need a visa to show that you are a US resident. This is to ensure your safety.
A US citizen does not require a visa to visit Dubai, only a current and valid US passport. Proper visitor documentation will be granted, free of charge, upon arrival of US citizens.
No, US citizens do not need a visa to travel to Romania. I myself have been there three times. Romania is a part of NATO. Any country that is a part of NATO US citizens do not need visas to enter. US Citizens need a visa if they wont to travel to Russia. I was in Frankfurt and some American didn't have a visa for Russia. The Airlines flew him to Russia but when he landed the government put him on the first flight to Frankfurt and deported him.
No, US citizens do not normally need a Schengen visa. They are normally allowed to stay for 90 days as a tourist without a visa.