As a means to fighting terrorism, Republican presidential frontrunner Donald Trump wouldnât rule out the closing of U.S. mosques and issuing special identification and/or setting up a database of Muslim Americans. When presented with the latter idea in an interview with Yahoo News, the business mogul said, âWeâre going to have to look at a lot of things very closely. Weâre going to have to look at the mosques. Weâre going to have to look very, very carefully.â During a Wednesday evening interview with Fox News, Trump doubled down on his support for possibly closing mosques, telling Sean Hannity the U.S. may have âno choice.â