"We should not burden a sitting president with civil suits, criminal investigations or criminal prosecutions". Who said it?

Ya get ONE guess! Why the guy good old King don has nominated as his SCOTUS Justice...Brett Kavanaugh. Which means Kav gives carte blanche to da King to do whatever the he** he wants to do WITHOUT consequences/accountabililty/responsibility/punishment. Think of all the wondrous worlds that await us with a prez who is an invincible/unaccountable/ignorant/emotional/needy wackadoodle?