Your boss doesn't need to ask you to trade in your ballot for that. They just need to tell you to take a photo of your filled ballot, inside the booth, before you go and stuff it into the box. Which is exactly what they do in countries where it's a problem.

At the same time, I'm not aware of literally a single complaint about this kind of thing in US states that practice mail-in voting...

And drug legalization is "banana republic tier", really? No. It's a recognition that "this stuff isn't good for you" is not a sound basis for passing laws, for one thing - and for another, it turned out that a lot of "isn't good" was just plain out lies and misdirection.

I mean, seriously, are you saying that WA and OR are banana republics?