Trump has spoken very clearly on the Muslim ban.  The details are in Hawai`i's challenge to Muslim ban 2.  After making the promise in 2015 to ban Muslims, he released "Donald J. Trump Statement on Preventing Muslim Immigration" which is still available on his web site: https://www.donaldjtrump.com/press-releases/donald-j.-trump-statement-on-preventing-muslim-immigration

When he "pivoted" to talk about banning certain nationalities, rather than Muslims, he was asked if this meant he'd pulled back from the Muslim ban.  He said "“I don’t think it’s a rollback. In fact, you could say it’s an expansion. I’m looking now at territories."

Later, he said his Muslim ban policy had been "right all along".

Hawai`i's challenge lists several other instances. 

Ironically, it is the radical right in its zeal to establish religion that is arguing Trump doesn't mean what he has plainly stated.  Judge Trenga's decision is clothed in the same irony.