He sounded pretty serious about the background checks and mentally ill stuff. He kept coming back to it.
It's possible that both Manafort and Page were plants, which would be ironic since they are the ones getting the indictments.
I predict rapid bipartisan agreement and passage of a bill that does two things (i) tightens background checks, (ii) addresses people who pose an immediate violent threat to self or others. I don't expect age restrictions or further restrictions on weapons. We'll see.