The attorney for the suspect said it was a misunderstanding, saying his client thought he was getting a cheap airline ticket, not a fake one.
Travelers are waiting hours at some airports to pass through TSA checkpoints as more officers call out amid the ongoing DHS shutdown.
Transportation Secretary Duffy says ICE agents are trained and can assist with airport security, following Trump's announcement that he will send them to airports Monday.
President Trump threatened to deploy ICE agents to U.S. airports starting Monday if Democrats don't agree to a funding package to end the DHS shutdown.
A bill to fund the Department of Homeland Security failed to advance Friday in the Senate amid growing concerns about long lines at airports.
As the partial government continues, Transportation Security Administration workers are worried about the long-term consequences of working with no pay.