At their broadest, no matter the type, US visa applications are applications that give you the authority to visit the US. There are many types of United States Visas. Some specifically allow your partner to enter the US to marry you, while others allow you to visit the US as a performer, athlete, entrepreneur, investor, or for some other reason. US visas are entered into your passport at a point of entry (such as an airport) or at any embassy or consulate. READ MORE