Form N-400

Form N-400 is used to apply for US citizenship through the naturalization process. Lawful permanent residents (also known as green card holders) of the United States, who meet the eligibility requirements, can file N-400 form to request citizenship.

Population concerned

In the United States, 8.8 million Lawful Permanent Residents are eligible to naturalize.

US citizenship eligibility requirements

To be able to apply for citizenship through naturalization, you have to meet the following requirements. You must:

US citizenship rights

Becoming an American citizen gives the same rights and privileges of citizenship as natural born American citizens, save one : naturalized U.S. citizens are not eligible for the Office of the President of the United States.

N400

N400 or N-400 may refer to:

N-400 road (Spain)

The N-400 is a highway in Spain from Toledo to Cuenca. It is being upgraded to the Autovía A-40.

It starts at the junction of the N-401, and the Autovía A-42 east of Toledo.

It heads east to Aranjuez and the Autopista R-4 and Autovía A-4. It then heads east with a junction to the N-301. At Taracón is a junction with the Autovía A-3.

The N-400 then heads through the Altos de Cabrejas to Cuenca and has been partly upgraded to the Autovía A-40.