Rachel Maddow talked about how we've accepted some things as normal that used to be unthinkable. "In politics today, we've got another one of those days that feels, I guess, sort of normal to us now. But even just a few years ago, today's politics headlines would've been rejected out of hand that is completely unimaginable and over the top," she said. "I mean, we just saw the de facto leader of the Republican party, former president Donald Trump, give one of his coveted endorsements to a candidate named J.D. Vance, who is running for the United States Senate seat...