Not anytime soon. You're most likely good to go. As a US citizen, you wouldn't need a visa to travel around the EU. Yugoslavia doesn't exist anymore, by the way. Some people from the Balkans might get mad at you ;)

Yugoslavia does not exist any more, but it's still in the same place :)

haha I know. My point is that in this case we need to be more specific, because I don't know what the visa requirements for Bosnia are compared to, say, Croatia or Macedonia. While it's the same area, their migratory policies might be different now that they're independent.

Sorry, meant the Czech Republic. I never have been good at geography.