Has Trump ever vetted anyone before bringing them into his cabinet?

Here's another loser, like convicted criminal Manafort he worked previously for an oligarch who is so dirty he is not allowed entry into the US. Where does he find these scumbags? Maybe from his donor list? LMMFAO.

Link: https://www.thedailybeast.com/richard-grenell-did-work-for-moldovan-politician-accused-of-corruption