I'm going to disagree slightly with your comparisons. Trump is openly admiring Putin and his policies, doing business with him directly and not through diplomats or proper house procedures. Actively weakening the US to the benefit of only our "adversaries", especially Russia.
If you laid down proof that Nixon or Jefferson were literal assets, I'd still be surprised. If you did the same for trump, I'd say "what else is new".
He repeatedly and transparently spreads Russian propaganda on his shitty xitter clone when he's not busy posting ai slop and treasonous garbage.