Billy Bush is an obnoxious celebrity journalist on one of the fluff celeb gossip shows - Access Hollywood, I think. He's a nobody these days. Maybe he joined one of the morning shows? I have no idea.
And yes, Trump was always viewed as a charlatan and buffoon before the election, which is why it took so long for the media to adjust. I think the way some of them struggled to normalize him to try to make this year fit a usual election season is contemptible - we all knew he was an ignorant, misogynistic bigot from the beginning. They were desperate for a horse race and were totally amoral and lazy in their handling of it. Now most of them have come around, but I wonder how dogged Trump loyalist and supposedly unbiased NBC analyst Mark Halperin - last seen whining on Twitter about how the media has a double standard for Mike Pence vs. Tim Kaine - will take this.
Speaking of, Halperin's "With All Due Respect" co-hosts on MSNBC (he is absent) just called the time of death for Trump's campaign - LOL.
The video is especially sleazy - listening to Trump and Bush sneer and slather, then get off the bus and try to sleaze all over poor Ari Zucker.