The Koran teaches that unbelievers are to be killed unless they convert or subjugate themselves and pay a protection tax, and anyone following that instruction would be guilty of a hate crime under US law.  

Let us therefore call Islam what it really is:  a teaching that incites hatred toward US citizens -  a hate crime in itself. 

Let us therefore also call Trump's Muslim ban what it really is:  a perfectly reasonable response by US leadership to stop the influx of hate criminals at it's borders. .