President Trump isn’t playing games anymore. Late Sunday evening, he posted what can only be described as a political ultimatum on Truth Social, and it’s aimed squarely at two groups: Democrats who’ve been blocking common sense election integrity measures, and Republicans who might be tempted to cave under pressure. The message was simple. No Department of Homeland Security funding deal gets made until Democrats vote for the SAVE America Act. Period. Full stop.

The SAVE America Act requires proof of citizenship and photo ID for voting. You know, the kind of thing you need to buy cold medicine or rent a car. Somehow this has become controversial in Washington, even though polling shows overwhelming support across party lines, across racial demographics, across pretty much every slice of the American electorate you can measure. But here we are.

Trump made it crystal clear he’s willing to let the shutdown chaos continue indefinitely. “I don’t think we should make any deal with the Crazy, Country Destroying, Radical Left Democrats unless, and until, they vote with Republicans to pass ‘THE SAVE AMERICA ACT,'” he wrote. He called it more important than anything else happening in the Senate right now. And honestly? He’s not wrong.

The Democrats have blocked House-passed DHS funding bills five times since the shutdown started on February 14th. Five times. They’re holding the department hostage over their demands on behalf of illegal immigrants, even as airport lines stretch longer and frontline workers miss paychecks. But Trump’s not budging, and he’s making sure Republicans don’t either.

He went further than just the voting issue. Trump said he wants to see firm stands on keeping men out of women’s sports and stopping gender mutilation of children bundled into any deal. These aren’t fringe positions dreamed up in some conservative think tank. These are positions that most Americans support when you ask them directly, without the media filter telling them what they’re supposed to think.

Senator Mike Lee took to the Senate floor over the weekend and dismantled the Democrat arguments against the SAVE America Act piece by piece. Democrats claim voting is a constitutionally protected right, which it absolutely is. But as Lee pointed out, that doesn’t mean we have to make it so easy that cheating becomes inevitable. “The fact that it’s a constitutionally-protected right in no way, shape, or form means that we have to make it easy to vote, and screw the rest. Let’s let them cheat,” Lee said. That’s the crux of it right there.

The opposition to election integrity measures always reveals itself in the same way. They dress it up in language about voter suppression and constitutional rights, but what they really can’t stomach is making it harder for nefarious actors to manipulate our elections. They want actual American citizens to have easier access to voting while simultaneously making fraud more difficult. Apparently that’s too much to ask.

Trump also suggested that Republicans who oppose these measures should “never be elected again” and urged Senate leaders to kill the filibuster if necessary. He wants them staying in Washington through Easter if that’s what it takes to get this done. This is the kind of pressure that separates serious leaders from political tourists just trying to keep their seats warm.

Only one Republican senator has voted against the SAVE America Act so far. That would be Lisa Murkowski of Alaska, which surprises exactly nobody who’s been paying attention to her voting record over the years. The rest of the GOP caucus seems to understand what’s at stake here.

What we’re watching is a test of will. Trump’s betting that Americans care more about election integrity than they do about temporary government dysfunction. He’s betting that voters will remember who stood firm and who folded when it mattered. And he’s betting that Republicans have finally learned their lesson about making deals with Democrats who have no intention of keeping their end of the bargain. The shutdown drags on, but at least now everyone knows exactly where the battle lines are drawn.

Related: California Governor Tries Selling America’s Worst Tax Fantasy and Gets Called Out