It's not supposed to make sense: lobbyists paid your politicians and now, you have to support Israel, or else...

There's nothing more to it. Israel knows that with access to Western weapons, it will reliably win every confrontation with the Palestinians, just like in Rhodesia or Apartheid South Africa. The only thing that did both regimes in was sanctions, or boycotts. I believe they literally studied these nations. So, they want to preempt any attempt at boycotting Israel, because it's the only way they'd ever face reckoning for all the unspeakable atrocities they've committed against the palestinians.

The latter. They effectively get exclusivity if they want.

How does that work?

Texas requires contractors to certify that they're not boycotting Israel; Florida maintains a public list of companies that boycott Israel and prohibits state investment in them; in Arkansas, the law has been upheld in federal court after a challenge.

It's funny how state rights are so important, but only for certain kinds of rights. The extreme rights.

Ah, this may require digging into the local politics of your US state and the particular law.

Here's the thing, fighting this in court would be extremely politically inconvenient for a lot of people.

The political opinions and political actions are what's being banned. You're free to silently buy whatever you want