Congress didn't listen to traumatized parents of kindergartners years ago, so I suspect they wont listen to traumatized teens today. You should remember a couple of things though. First, this Cruz kid was an American Law Abider right up to the minute he started pulling the trigger on the combat weapon he legally bought.
With 39 visits from the local police for violent behavior. Go figure.
Secondly, in less years than has passed between their trauma and Sandy Hook, these traumatized teens will be voters.
Then they may attempt to repeal/amend the 2nd Amendment, as will be their right as Americans.
I hear Scott is now grabbing at the Trump excuse #1 and blaming the FBI, who got 1 tip from an anonymous caller, while his own Sheriff's Dept got over 20. That's where State's Rights advocates who hate government interference go when they step in it. Blame the feds!
Surely the FBI was aware of the 39 previous calls. I blame the locals AND the FBI. Both dropped the ball.
When someone says "I'm going to shoot the president", they in the least will get a visit from the USSS, and chances are very good you won't see them for a week or so, if then.
If someone says "I'm going to shoot up a school", it seems that in general ... nothing happens. Whose failure is that?