President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE in a tweet early Thursday said that Senate Minority Leader Charles Schumer Chuck SchumerMcConnell accuses Democrats of sowing division by 'downplaying progress' on election security Warren, Schumer introduce plan for next president to cancel ,000 in student debt Schumer lashes out at Trump over 'blue states' remark: 'What a disgrace' MORE (D-N.Y.) lied about Trump throwing a "temper tantrum" during negotiations concerning the partial government shutdown.

Trump in a tweet referred to Schumer as "Cryin Chuck," a nickname he has previously used for Schumer.

"Cryin Chuck told his favorite lie when he used his standard sound bite that I 'slammed the table & walked out of the room. He had a temper tantrum.' Because I knew he would say that, and after Nancy said no to proper Border Security, I politely said bye-bye and left, no slamming!" Trump wrote.

Cryin Chuck told his favorite lie when he used his standard sound bite that I “slammed the table & walked out of the room. He had a temper tantrum.” Because I knew he would say that, and after Nancy said no to proper Border Security, I politely said bye-bye and left, no slamming! — Donald J. Trump (@realDonaldTrump) January 10, 2019

Trump told reporters as he was leaving the White House for a tour of the border later Thursday that he doesn’t have “temper tantrums.”

“I didn’t pound the table. I didn’t pound the table. That is a lie,” he said. “All of that narrative is a lie.”

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Trump met Wednesday with Schumer and Speaker Nancy Pelosi Nancy PelosiMcConnell focuses on confirming judicial nominees with COVID-19 talks stalled Overnight Defense: Top admiral says 'no condition' where US should conduct nuclear test 'at this time' | Intelligence chief says Congress will get some in-person election security briefings Pelosi must go — the House is in dire need of new leadership MORE (D-Calif.) inside the White House, but said he left early because he felt it was a "total waste of time."

During the meeting, the Democratic leaders urged Trump to end the government shutdown, which is approaching its fourth week. The president during asked Pelosi if she would approve funding for a wall along the southern border within 30 days if he reopened the government. Trump then left the meeting after Pelosi denied that request.

"Again, we saw a temper tantrum because he couldn't get his way and he just walked out of the meeting,” Schumer told reporters on the West Wing driveway afterward.

Trump also took to Twitter following the meeting with Schumer and Pelosi, writing that "nothing else works" in negotiations other than a border wall.

"Just left a meeting with Chuck and Nancy, a total waste of time," Trump tweeted minutes after the meeting. "I asked what is going to happen in 30 days if I quickly open things up, are you going to approve Border Security which includes a Wall or Steel Barrier? Nancy said, NO. I said bye-bye, nothing else works!"

The partial government shutdown, now in its 20th day, was prompted by Trump's refusal to sign a government funding bill that didn't include $5.7 billion for a wall along the southern border.

Democrats have vowed not to approve any funding for the wall, while Trump has maintained that he won't reopen the government until they do.

Trump also declared Thursday on Twitter that there is "GREAT unity" among Republicans in Congress amid the shutdown, even as some members of the GOP — including Sen. Lisa Murkowski Lisa Ann MurkowskiGOP ramps up attacks on Democrats over talk of nixing filibuster OVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House Democrats tee up vote on climate-focused energy bill next week MORE (Alaska) — have broken with Trump over wall negotiations.

"There is GREAT unity with the Republicans in the House and Senate, despite the Fake News Media working in overdrive to make the story look otherwise. The Opposition Party & the Dems know we must have Strong Border Security, but don’t want to give “Trump” another one of many wins!" Trump tweeted.

There is GREAT unity with the Republicans in the House and Senate, despite the Fake News Media working in overdrive to make the story look otherwise. The Opposition Party & the Dems know we must have Strong Border Security, but don’t want to give “Trump” another one of many wins! — Donald J. Trump (@realDonaldTrump) January 10, 2019

Updated at 9:51 a.m.