Twenty-one members of the Saudi Arabian military are being expelled from the US after a cadet fatally shot sailors at a Florida air base last month.
The servicemen are not accused of aiding the 21-year old Saudi Air Force lieutenant.
But US Attorney General William Barr said the cadets were found to have shared jihadist posts and child pornography on social media.
Training for Saudi servicemen was put on hold in the US after the attack.
Mr Barr told a news conference on Monday that the shooting in Pensacola had been an “act of terrorism”.
