"Cocaine Mitch" wasn't a term of endearment until he blocked Merrick Garland. 90+ lbs of cocaine was reportedly seized from a boat owned by his wife's family shipping company - hence the moniker. Mitch was always swamp. He just held the line on judicial appointments and that's about all we can credit him for. He's been swampy on legislation. He bailed on Trump as soon as he secured his reelection. He'd have nothing to lose by supporting Trump until the next President is sworn in.