The reboot of 'Firing Line' is not working: it was never conceived as an interview show but a contest of ideas; the new host lacks William F. Buckley's worldview, forensic approach to argument, and killer instinct when someone says something fatuous. warondrivel.com/firing-line-re… 
This clip is a perfect illustration of what's wrong with the 'New Firing Line': it doesn't matter about the politics; the host allows Ocasio-Cortez a soft landing when she gets herself caught up in contradiction and exposes her ignorance. Buckley would never have allowed that.
Here's a clip from a 1971 'Firing Line' episode where William Buckley catches John Kerry making a silly point about the #Vietnam War. It's this kind of thing that the rebooted 'Firing Line' avoids, but which was central to the original.
As a bonus: The 'Firing Line' episode I know of where William Buckley is most hostile to a guest is this one from 1968 with Leander Perez, a supporter of George Wallace's segregationist candidacy. Buckley provides enough rope for Perez to hang himself and interjects with ridicule
