For a non-US person why do people become VP? Apart from the slim chance of becoming president by virtue of an assassin, what is in it for an ambitious politician.
You get seen as a "party leader" for whatever that is worth. You probably are getting involved in a lot of important decisions. It kind of depends on why you were selected as VP. Biden served as Obama's VP to help the younger, less experienced President handle the legislature.
And also put a comfortable old white guy face next to the far left black radical. /s...kinda
Cheney also did this for W and El BJ did this for Kennedy
I imagine Walz is filling this role in a smaller way with Harris. He spent a few terms in the House and also was a successful governor.
A VP may be used to appeal to a demographic the president doesn't or to "reward" a demographic for their support.Pence was chosen to appeal to the evangelical base of the Republican party and give the Orange Weakling credibility with Bible thumpers. Biden named Harris his VP partially as a thank you to black women, who have been vital tothe Democratic Party.
The VP may have specific experience to address something POTUS wants to focus on. One fo the things I don't think gets enough attention is the way the FTC and DoJ have gone after corproate malfeasance udner the Biden Administration. This is something Harris also did as Califronia AG, so she may have been part of that. It certainly seems to be on her agenda as POTUS.
A lot of people thin tkhe VP should "ideologically balance" POTUS. Gore supposedly did this for Clinton, as well as add an established name to the newer one.
Or, it may be a case of being "demoted up stairs". Teddy Roosevelt was named William McKinney's VP because the party bosses were hoping it push him into obscurity while satisfying his progressive supporters.
Do VP usually get chosen to be the next presidential candidate?
Its not automatic, but its a good leg up. The problem is, it is rare for a VP to succeed after a 2 term POTUS. Granted, we're talking about a very small sample size.
Clearly Biden got a stinking pension out of it, and IMHO should have retired and not stood for the presidency. But what do VPs do after VPing? The only one who I can think of who has made a mark for themselves is Quayle.
Make documentatires about global warming? Chair departments at universities? Public speaking events? Cameo on the Simpsons?