Boys from a Mosul orphanage were indoctrinated by the jihadists to become a network of informants and fighters.
The Trump administration has said the ban would help prevent terrorism but opponents assailed it as unconstitutional.
President signs executive order asking Joint Chiefs to submit a plan in 30 days.
Iraqis are moving to take full control of eastern Mosul with preparations to attack the western bank.
A semblance of normality is returning to eastern areas that were retaken from Islamic State.
Iraqi special forces are aiming to recapture the city taken by militants in 2014.
Lieutenant General Talib Shaghat said the cooperation of residents was helping the advance against ISIS.
Authorities suspect the 38-year-old migrant of seeking 180,000 euros ($189,000) from the Islamic State to fund one or more attacks.
The operation also has cost $10 billion since 2014, the data shows.
Heavy fighting in Mosul during renewed U.S.-backed offensive against militants.
Iraqi PM Hiader al-Abadi said it would take three more months to rout ISIS.
Most Christians had to flee their homes to avoid death at the Islamic State's hands.
Local law enforcement received a bulletin saying there were no known specific threats.
Military is closing in on Sambisa Forest, the group’s remote final stronghold.
The Florida gunman had pledged allegiance to the militant group before he killed 49 Orlando clubgoers.
ISIS producing weapons on a scale and sophistication which matches national military forces.
21-year-old Varvara Karaulova is on trial for attempting to join the group.
Iraqi troops offensive to retake the city has been hampered by Islamic State counter attacks.
Qatar currently works within a CIA program that provides arms and training to rebels fighting Assad.
The Islamic State militant group has called the parade an "excellent target."
UN says civilians are being targeted in the battle to retake ISIS's stronghold in Iraq.
Officials believe that True Religion acted as a recruiter for the Islamic State.
Troops recapture town of Nimrud, 20 miles south of Mosul.