Muslim Oath of Peace and Non Violence
Any one who refuses or does not sign (except Diplomats or Officers of State), would be denied entrance or travel into the United States of America,including US territories, and areas under control by the United States of America.
I think this would go a long way in sorting out the Chaf from the wheat.
At least in Identifing those that may be a High Risk.
Deport or Jail those who will not sign, as an Ounce of Prevention is worth a Pound of Cure.
My Hope is that this would help to Identify and put a stop to those Cowards who Kill, Innocent Men, Women, and Children, for their perverse Dogma.