The Senate is leaving Washington Saturday night for its monthlong August recess without a deal to advance dozens of President Donald Trump's nominees, calling it quits after days of contentious bipartisan negotiations and Trump posting on social media that Senate Democratic Leader Chuck Schumer can “GO TO HELL!” Without a deal in hand, Republicans say they may try to change Senate rules when they return in September to speed up the pace of confirmations. Trump has been pressuring senators to move quickly as Democrats blocked more nominees than usual this year, denying any fast unanimous consent votes and forcing roll calls on each one, a lengthy process that can take several days per nominee. The latest standoff comes as Democrats and Republicans have gradually escalated their obstruction of the other party's executive branch and judicial nominees over the last two decades, and as Senate leaders have incrementally changed Senate rules to speed up confirmations — and make them less bipartisan. In 2013, Democrats changed Senate rules for lower court judicial nominees to remove the 60-vote threshold for confirmations as Republicans blocked President Barack Obama’s judicial picks. In 2017, Republicans did the same for Supreme Court nominees as Democrats tried to block Trump’s nomination of Justice Neil Gorsuch. Trump has been pressuring Senate Republicans for weeks to cancel the August recess and grind through dozens of his nominations as Democrats have slowed the process. But Republicans hoped to make a deal with Democrats instead, and came close several times over the last few days as the two parties and the White House negotiated over moving a large tranche of nominees in exchange for reversing some of the Trump administration's spending cuts on foreign aid, among other issues. But it was clear that there would be no agreement when Trump attacked Schumer on social media Saturday evening and told them to pack it up and go home. “Tell Schumer, who is under tremendous political pressure from within his own party, the Radical Left Lunatics, to GO TO HELL!” Trump posted on Truth Social. “Do not accept the offer, go home and explain to your constituents what bad people the Democrats are, and what a great job the Republicans are doing, and have done, for our Country.” “We should be working together on legislation to get things done for the American people. That's the way to go, not changing the rules.” Schumer said Saturday.