“Celebrity Big Brother” has once again dipped into President Trump’s former employee rolls for on-air talent: CBS announced Sunday that Anthony Scaramucci, the man who lasted less than two weeks as the White House communications director in 2017, is joining the B-list cast of the “Real World”-meets-“Survivor” competition series. Scaramucci follows in the stilettoed footsteps of former Trump staffer Omarosa Manigault Newman, whose salacious tenure on “Celebrity Big Brother” was marked by headline-grabbing confessionals about the utter chaos behind the scenes at 1600 Penn. While there’s no doubt that “the Mooch” will be dropping gems of his own, as a...