The U.S. Department of State issues visas to foreign nationals traveling to the United States through its embassies or consulates. However, you do not need a visa for your business meeting or for vacation if you are a citizen of the 38 countries participating in the Visa Waiver Program.
Your reason for travel will determine the type of visa you need to enter the U.S. Some of the most common requested visas are:
When you arrive in the United States, you must show valid travel documents as part of the entry procedure. The document(s) required depend on the country you are arriving from and your citizenship or status.
Customs and Border Protection (CBP) officers conduct arrival inspections using the same criteria for all foreign nationals visiting the U.S. They have sole discretion concerning your admission to the United States, even if all your travel documents, including your visa, are in order.
Note: While there are no rules prohibiting pregnant visitors from entering the United States, doing so to give birth is not one of them. A CBP officer will consider your pregnancy when deciding on your admission.