There are several different types of G visas, including the G-1 visa for representatives of recognized governments, the G-2 visa for representatives of recognized governments in transit to or from an international conference, and the G-3 and G-4 visas for representatives of non-recognized or observer governments.
Individuals with G visas are generally allowed to stay in the United States for the duration of their work with the international organization or foreign government, up to a maximum of five years. They may be accompanied by their spouses and children, who may be eligible for G-4 visas.
In order to qualify for a G visa, individuals must have a legitimate purpose for coming to the United States, such as attending meetings, participating in negotiations, or representing their government or organization in some capacity. They must also have a letter of invitation from the international organization or foreign government, and must not have any disqualifying criminal or immigration history.
It is important to note that individuals with G visas are generally not allowed to work or engage in any commercial activity in the United States, and are expected to maintain the same level of diplomatic immunity as other diplomats and foreign officials. However, they may be able to apply for work authorization if needed for their work with the international organization or foreign government.
Overall, the G visa is a useful option for individuals who are affiliated with international organizations or foreign governments and need to come to the United States for a temporary period of time. It allows them to engage in their work and maintain diplomatic immunity, while also following the rules and regulations of the U.S. immigration system.