Immigration guides
Immigration guides
Plain answers to the questions clients ask most, with the official sources for each fact. Each guide shows the date of its last update.
U.S. citizenship through naturalization (Form N-400)
Most green card holders can apply for U.S. citizenship with Form N-400 after 5 years as a permanent resident.
How to get a green card through marriage
If you marry a U.S. citizen or a lawful permanent resident, your spouse can file Form I-130 to start your green card case.
Green card for immediate relatives of U.S. citizens: spouses, children, and parents
Immediate relatives of U.S. citizens are spouses, unmarried children under 21, and parents of a citizen who is 21 or older.
Family preference green card: the F1, F2A, F2B, F3, and F4 categories
Family preference categories cover relatives who are not immediate relatives of a U.S. citizen, such as adult or married sons and daughters, and siblings.
EB-1 green card: requirements for EB-1A, EB-1B, and EB-1C
EB-1 is the first-preference employment-based green card. It has three categories: EB-1A for extraordinary ability, EB-1B for outstanding professors and researchers, and EB-1C for multinational executives and managers.
EB-2 green card: requirements, the PERM path, and the national interest waiver (NIW)
EB-2 is an employment-based green card for professionals with an advanced degree and for people with exceptional ability in the sciences, arts, or business.
O-1 visa requirements and how to get an O-1 visa
The O-1 visa is a temporary work visa for people with extraordinary ability in the sciences, education, business, athletics, or the arts.
H-1B visa: requirements, lottery, and fees
The H-1B visa lets a U.S. employer hire you for a specialty occupation that normally requires a bachelor's or higher degree in a specific field.
E-2 treaty investor visa: requirements, treaty countries, and how to apply
The E-2 visa lets a national of a treaty country develop and direct a U.S. business in which they invest substantial capital.
K-1 fiancé(e) visa: requirements, process, and costs
A K-1 visa lets the foreign fiancé(e) of a U.S. citizen enter the country and marry that citizen within 90 days of entry.
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