If you are a foreign national who wishes to travel and live in the United States for an extended period of time, you may be eligible for a diplomatic visa. A diplomatic visa is reserved for people who are traveling on behalf of their country on official business.
A diplomatic visa is a type of non-immigrant visa that permits an individual to travel to the United States temporarily for a specific purpose, such as to conduct business, negotiate a treaty, attend a conference, etc. The visa is only valid for the duration of the specific event.

Those who qualify for this type of visa may be exempt from certain immigration requirements such as the yearly quota system for employment-based visas and may also be exempt from the numerical limitation that applies to all non-immigrant visas.