Probably the same reason the wife and I lock our bedroom door sometimes. We are doing naughty stuff and don't want people to see it.

Because he is a leftard douchebag who knows the evidence will tank his paymasters.

If they aren't doing anything wrong, what do they have to hide comes to mind here.

Goes without saying, but I'll answer anyway....because the democrats are garbage humans who lie, cheat and steal. They contribute nothing to society and expect the most. They rely on masses of people that are frighteningly uninformed and overly reactive. They play off their emotions by saying things like: "kids in cages" and "racism". Democrats are scum!

Because he’s a corrupt partisan hack pretending to be a judge?

Because he got elected using the same Dominion flip voting system?

Because he is a corrupt sack of shit? Do I win a prize for guessing correctly?