President Barack Obama has refused to send any suspected terrorists captured overseas to the detention center at Guantanamo Bay.

But if the U.S. starts seizing more militants in expanded military operations, where will they go, who will hold them and where will they be tried?

Those are questions that worry legal experts, lawmakers and others as U.S. special operations forces deploy in larger numbers to Iraq, Syria and, maybe soon, Libya, with the Islamic State group and affiliated organizations in their sights.

Throughout Obama's presidency, suspects have been killed in drone strikes or raids, or captured and interrogated, sometimes aboard Navy ships. After that, they're either prosecuted in U.S. courts and military commissions or handed over to other nations.

This policy has been enough, experts say — for now.