In his challenge to Senator Feinstein regarding her "assault" weapons ban, Senator Ted Cruz (R-TX) completely skewered her and fellow senators Leahy (D-VT) and Durbin (D-IL). Their video exchange has gone viral, but most versions either cut off after Feinstein and Co. finally find an argument about the First and Fourth Amendments, or earlier, when Feinstein gets huffy about being "lectured."
However, despite Feinstein's insulting retorts, Cruz keeps slamming her with questions and offering some priceless returns of his own, like thanking Senator Leahy for acknowledging that Texas allows books. Feinstein then attempts to lecture Cruz on the Supreme Court's Heller decision, in which the Court acknowledged the constitutionality of some restrictions, and uses that, and her mindless First Amendment narrative about pornography, to justify her weapons ban.
But what most have missed, because it is not included in those videos, is the closing remarks. This is where Cruz lowers the boom. He reminds them casually that he argued Heller before the Supreme Court on behalf of 31 states - I wonder if they even knew - and keeping a straight face, suggests that he might know a little about Heller himself. He educates them about the Court's decision, which exempted firearms "in common use." Since most firearms on the ban list are in common use by any ordinary standard, they cannot be banned, and to attempt to do so is plainly unconstitutional.
This is the video people need to see: