Who cares what their opinions are? Do any of their countries allow non-Muslims to flood into them?
8 US Code 1182 gives the president the power of which Trump spoke of.
Clinton tweeted that Trump’s proposal was “reprehensible, prejudiced and divisive.” Huma Abedin, Clinton’s campaign vice-chairwoman, sent out an e-mail to Clinton supporters with the subject matter — “I’m a proud Muslim.”
“Unfortunately, Trump is leaning into the kind of fear of progress that very well could help him win the nomination,” Abedin wrote. “We have to be ready to stop him.”
SOURCE:
http://www.cnn.com/2015/12/08/politics/donald-trump-muslim-republicans-2016/index.html