The key problem here is that it’s not just Walz making a singular mistake; it’s that his whole administration is illegally failing adequately safeguard information and illegally avoiding communications channels with official archiving capabilities built into them
Chosen by who
The Vice Presidency is an elected position.
We don’t live in a society of rule or law anymore. You’re still under the assumption of words mattering. Apparently every wish or thought is an EO away.
Chosen by him, but he can’t fire the VP. Pence would have been gone Jan 5 if he could. Fun note, VPOTUS used to be the presidential runner up, until the twelth amendment. That’s a bit why the office is protected and elected seperately.
And why there are some strange laws that could keep two folks from the same state from running on the same ticket. It’s not forbidden, but there’s some weirdness about it.