@engineer,
So by that thinking President Roosevelt was a racist?
In any case, you have a known small group of mass killers that are also part of a larger innocent group so it is racist to limit the innocent member of this group freedoms of movement in and out of the country for a time to hopefully block the abilities of the killers to repeat killing thousands of more Americans?
Frankly I think that the policy will not work and will cause more harm then good but trying such a policy is not a racist thing to do in itself.
God help us but President Trump would be wrong but n0t a racist as it was not Mormons or Scientologists or Jews or Christians or Buddhas or.....whatever as the risk is and was coming from members of the Muslim religion.
By the way the Muslims terrorists are able to screen Muslims out of a group of hostages before killing the hostages by asking religion questions so I would assume that our people could do similar screening as well.