Sure, Congress will act, but the Supreme Court has spent the last 15 years making sure that even the most moderate, milquetoast gun reforms get struck down. I know the current Justices are hypocrites that make a mockery of precedent, but considering they're the ones that created the precedent (particularly Alito, Roberts, and Thomas), it's going to be hard for Congress to write a gun control law that doesn't force several Justices to either strike it down or invalidated their own opinions.

A constitutional amendment isn't impossible, but I think the NRA would still have enough juice to prevent Congress from reaching a two-thirds consensus, and definitely enough to stop three-quarters of states from ratifying it. The billionaire class has spent a lot of money making gun control extremely difficult, and I think that's about to bite them in the ass.