In most countries there is a bi-national center supported in part by US funds where you can get assistance in your search for language programs, undergraduate programs, postgraduate programs, exchange programs, etc. in the US. This is a good place to start because the counselors are up-to-date on any country-specific issues.
For example, in Venezuela, the center is the AVAA (
www.avaa.org) and in Colombia it is the Colombian American Center (
http://www.colomboamericano.org/info_english.htm)
To find the center in your country try googling "bi-national center Colombia" replacing Colombia with the name of your country.
Amideast is the organization serving North Africa and the Middle East:
http://www.amideast.org/
Wishing you all the best!