An International Driving Permit (IDP) translates information contained on your driver’s license into 10 languages so that officials in foreign countries are able to interpret your license. An IDP supplements a valid government-issued license–it does not serve as a replacement for a license. If you are stopped by law enforcement, you will most likely be asked to produce both your IDP and your official driver’s license. The United States does NOT issue International Driving Permits to foreign visitors, so you will need to obtain this document before traveling to the U.S.
If you are going to reside in the U.S., you can get a U.S. driver’s license once you are in the U.S., but it may take several months to obtain a U.S. driver’s license.
You can read more information at the link quoted above.