[tdb7893]

In American democracy winning a single election doesn't change the constitution or even the laws at all. There are separate processes for those things that haven't happened. The monetary decisions the executive branch is making right now are explicitly reserved for Congress, which notably hasn't passed a law for it.

Voting for someone doesn't imply they aren't bound by existing rules.

Edit: There's also more to be said here about restrictions on American democracy (e.g. gerrymandering, first past the post, disenfranchisement, financial barriers to entry for candidates, lack of choice for political parties, etc) that make the US not some bastion for democratic governance. I'm not an expert but the current chaos is at least partially enabled by the flaws in American democracy (rigid 2 party control is a good example of a generally undemocratic force, many Americans would prefer more parties but aren't being represented, that is enabling executive overreach).