He's on record many times that he wanted to close the door to Muslims.
Rudy was in cahoots & said he'd find a way to do it legally. And his supporters were in favor, so he'd rile them up with this stuff.
Ironically, a FBI pro said this wouldn't help with terrorists, most are home grown, and or come from Saudi Arabia, Pakistan, Egypt, Belgium.
Notice the verdict was 10-3, that's pretty strong.
He does have an edge in the Supreme court, now.