No.
yes but it has to be an American visa.
American citizens don't require a visa to visit Mexico.
Anybody visiting Russia needs a visa. A Russian visa is not a rubber stamp, it is a separate document with your photo on it. Also, apply for one as far in advance as possible.
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.
Yes, Americans need a visa to travel to Russia.
Yes, Americans need a visa to visit Austria for stays longer than 90 days. Short visits of up to 90 days do not require a visa for American citizens.
Yes, I'm pretty sure you will need a Visa though. (Not Visa credit card)
Do Jamaican need visa to visit Guyana
Do Canadians need a visa to visit germany
Yes, US citizens need a visa to travel to Russia.
Yes Canadians need Visa to visit Rwanda