At least 5 family members knew Mateen was planning an attack.  A gun store contacted the FBI the week prior when Mateen tried to buy guns and body armor.

It is not only reasonable, but necessary for America put a temporary ban on Muslim immigration when 1 in 5 American Muslims REFUSE to rule out attacks on civilians to further the goals of Islam (Pew Research).

It seems a sizeable number of Muslims are not like us.   Or want America to continue.

via Breaking: Islamist Killer Mateen Signed Over His House to Brother-in-Law Just Before Attacks