Let's be honest, they were/are not out to ruin him. They are out to delay the nomination vote long enough to be after the election, then hope they have the numbers and can vote "no", then continue to stop Trump wherever they can. They could care less about ruining one mans life or reputation.
Feinstein should be brought up on obstruction of justice charges IF this proves out to be true, which I seriously doubt. If so, she had proof and withheld it
