MAVNI

Seojun Lee stands outside an Army recruiting station near Phoenix. Lee signed up for the Army more than four years ago, but hasn't been allowed to serve.
Josie Huang / American Homefront

The MAVNI program allowed non-U.S. citizens to enlist in the armed services if they had foreign language skills or other special expertise. But the program is now at a standstill.

The first Navy sailors to participate in the MAVNI program take their oath of citizenship in this 2010 file photo. MAVNI has been controversial since it began in 2008.
Scott Thornbloom / U.S. Navy

From 2009 to 2016, the Defense Department recruited more than 10,000 non-citizens into the armed forces. Now some say they're being discharged without explanation.