Proposes closing parts of the Internet to fight ISIS

At the Dec. 15, 2015 Republican debate in Las Vegas, Trump said the U.S. might have to "close up" or "shut down" parts of the Internet used by ISIS and insisted that tech experts could make it happen, brushing aside civil-liberties concerns and suggesting that curbing online speech was a straightforward security fix.

"We have to go see Bill Gates and a lot of different people that really understand what’s happening. We have to talk to them about, maybe in certain areas, closing that Internet up in some way." — Fifth Republican primary debate in Las Vegas (Dec. 15, 2015) during exchange on ISIS and online recruitment