I've found that when traveling overseas, the carrier has NEVER lost my luggage either to or from my destination. I've been traveling at least once a year since 2001. That's not to say that my luggage has never been damaged though...grrrrr.
Alexandra....you can check out all the airlines and airports online to see what guidelines you need to follow for carryon luggage etc. Also for times between flights.
Also, I was under the assumption that visas were now required by anyone traveling to the US. I could be wrong about that though. This link should help you determine if you need a travel visa -
http://travel.state.gov/visa/temp/info/info_1304.html
Good Luck!
sabby