US Citizenship Through a Grandparent — The Complete N-600K Guide

One of the least-known opportunities in US nationality law is the 'grandparent' route — a child becoming a US citizen based on a grandparent's US presence, even when the parent didn't transmit citizenship. It lives in Section 322 of the Immigration and Nationality Act, and the application is Form N-600K.

When you actually need this route

A child born outside the US to a US-citizen parent acquires citizenship automatically only if the parent met a physical-presence requirement: for births on or after November 14, 1986 — five years in the US, two of them after age 14, before the birth. Many parents who grew up mostly in Israel don't meet that bar — which is exactly where the grandparent route comes in.

N-600K eligibility

• The child is under 18 at filing and approval
• There is a US-citizen grandparent
• The grandparent met 5 years of US physical presence, 2 of them after age 14
• The child lives abroad and lawfully enters the US to complete the process

Eligibility turns on the precise details of the grandparent's presence history — precisely where it pays to get advice before filing, rather than discovering a problem at the counter.

The fee-waiver route

In certain cases a federal-fee waiver can be requested. It requires extra handling, but for families with several children the saving adds up to hundreds of dollars per child. We assess whether your case fits.

The common mistake

Parents wait. The child nears 18, the grandparent's documents get lost, and the window closes. The earlier you start, the simpler and cheaper the process. The first step is an eligibility check, no obligation: we review the grandparent's documents and tell you honestly whether a path exists.