After weeks of huddled negotiations, House Republicans on Thursday will attempt to bridge a longstanding intraparty divide and pass immigration legislation that would protect so-called Dreamers from deportation and bolster President Donald Trump’s enforcement and border security agenda.

The House will vote on two bills, both of which are long shots to pass given that no Democrats plan to support them and Republicans are split. The measures face crucial tests around lunchtime, when the House will vote on the rules for both. If Republicans don’t unite at least on those votes, one or both bills could die before coming up for a vote final passage.

The first bill, favored by conservatives, would grant legal status to Dreamers enrolled in the expiring Deferred Action for Childhood Arrivals program while authorizing funds for Trump’s U.S.-Mexico border wall and cracking down on asylum seekers.

The second bill, the result of a compromise brokered by GOP leaders, includes many of the same enforcement provisions. But instead of granting Dreamers legal status, it would create a new merit-based visa program that Dreamers could obtain and use to gain eventual citizenship.

The chances that either bill can pass looked even worse after Trump tweeted Thursday morning that he didn’t see the point of even voting on them given that Senate Democrats can block most legislation from eventually reaching his desk.