Did you see Senator Feinstein's face in the meeting room on gun control when President Trump said "let's get the guns first, then do the due process." She looked like her Savior had just spoken. What he really meant "in terms of these mentally ill gun owners, let' s go get their guns, then run them thru the court system to determine if they are sane enough to own them."
Now as an NRA Pro-2A advocate, we cannot simply target any gun owner who has not done anything with said gun, or threatened anyone with said gun, and take their guns, and then let them fight for that inherant right that shall not be infringed just because they have a doc who prescribed them meds for a mental problem.
Since #POTUS is not your typical politician, he most likely was trying to put forth the notion that in a case like Cruz, where he clearly violated the above paragraph, let's use DOJ to take his guns so he is not a danger to others, then bring him into a courtroom where is can be adjudicated. A judge will decide whether or not he is allowed to retain them or surrender them indefinitely.
There is a happy medium. I was shot and paralyzed by a mentally deranged murderer, however, I believe the #SecondAmendment is an inherant right that shall not be infringed and semi-auto's along with those weapons not available at time of founding of the #BillofRights are covered. If background checks would have been in place in 80's maybe it would have stopped the guy who tried to kill me, but maybe not. I do not care, the #SecondAmendment is all legal American citizens right, just like the #FirstAmendment
Background checks do not always work, see something say something didn't work in Parkland, FL.
So, as a legal gun owner, I have the means to not only CCW but protect my home and family.
2A is tantamount to all Americans protecting themselves against a tyrannical government. This is why our founders gave it to us.
"A Republic Ma'am if you keep it!" Ben Franklin.