Diplomats and other foreign government officials traveling to the United States to engage solely in official duties or activities on behalf of their national government must obtain A-1 or A-2 visas prior to entering the United States. The specific duties or services that will be performed must be governmental in character or nature, as determined by the U.S. Department of State, in accordance with U.S. immigration laws.
Crewmember visas are nonimmigrant visas for persons working on board commercial sea vessels or international airlines in the United States, providing services required for normal operation and intending to depart the United States on the same vessel or any other vessel within 29 days.
The H-2A program allows U.S. employers or U.S. agents who meet specific regulatory requirements to bring foreign nationals to the United States to fill temporary agricultural jobs. To qualify for H-2A nonimmigrant classification, the employer or agent must offer a job that is of a temporary or seasonal nature and demonstrate that there are not enough U.S. workers who are able, willing, qualified, and available to do the temporary work. Before requesting H-2A classification from United States Citizenship and Immigration Services, the employer or agent must apply for and receive a temporary labor certification for H-2A workers from Department of Labor.
The H-2B program allows U.S. employers or U.S. agents who meet specific regulatory requirements to bring foreign nationals to the United States to fill temporary non-agricultural jobs. Similar to H-2A, the employer or agent must offer a job that is of a temporary nature and demonstrate that there are not enough U.S. workers who are able, willing, qualified, and available to do the temporary work. The employer or agent must apply for and receive a temporary labor certification for H-2B workers from Department of Labor.
Media visas are for representatives of foreign media such as members of the press, film or radio industries, whose activities are necessary to the function of the foreign media such as reporters, editors and other persons in similar occupations.
The exchange visitor visa category is for individuals approved to participate in work and study-based exchange visitor programs. To participate in the exchange visitor program, foreign nationals must be sponsored by one of the State Department-designated sponsors. Once you obtain the required form from your sponsor, you may apply for an exchange visitor visa at the U.S. embassy or consulate in your country of residence. Also, your spouse and any children can apply for an exchange visitor (J-2) visa when you apply, or join you after you are in the United States if the exchange category in which you are participating permits an accompanying spouse and/or dependents. All exchange visitors are expected to return to their home country upon completion of their program in order to share their exchange experiences.
You should have a U.S. employer for all types of P visas.
The P-1A classification applies to you if you are coming temporarily to the United States solely for the purpose of performing at a specific athletic competition.
The P-1B classification applies to you if you are coming to the United States temporarily to perform as a member of an entertainment group that has been recognized internationally as outstanding in the discipline for a sustained and substantial period of time.
The P-2 classification applies to you if you are coming temporarily to perform as an artist or entertainer, individually or as part of a group, who will perform under a reciprocal exchange program between an organization in the United States and an organization in another country.
For a P-3 visa, you must be coming to the United States either individually or as a group for the purpose of developing, interpreting, representing, coaching, or teaching a unique or traditional ethnic, folk, cultural, musical, theatrical, or artistic performance or presentation.