The best way to get an elective is to start early and apply to multiple places. Often you won't even get a response to your e-mail which is why it's so important to send e-mails to many different places. There's no magical list of which place you should go for your electives. Many different places accept foreign students for electives so you should first decide on a field and then narrow the search from there by finding the top hospitals that are performing research in that department.

A lot of members come to the forum asking where members have been accepted and then only apply there. Honestly it doesn't matter where MastahRiz was accepted because unless you happen to have the same field interests what worked for other members won't be the best choice for you. While it might be the easy way out it's definitely not the best career choice.

MastahRiz has given you some great advice -- Let the e-mailing begin!

Check out this thread: U.S. medical colleges that accept international students for clinical electives for more info on where you can apply.