Calls for Sen. Lindsey Graham Lindsey Olin GrahamSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-S.C.) to resign began trending on Twitter Tuesday morning after the Senate Judiciary Committee chairman encouraged President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE’s son, Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE, to plead the Fifth.

Graham on Monday said Trump Jr. should refuse to answer questions from the Senate Intelligence Committee, which subpoenaed Trump Jr. to testify about his communication with Russian officials.

“You just show up and plead the Fifth and it’s over with,” Graham told reporters, referring to the amendment that protects citizens from self-incrimination, according to The Washington Post.

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The official Twitter account for Democratic Coalition, an anti-Trump super PAC that targets Republican officials and candidates, called for Graham to resign following the comments.

“Retweet if you agree. #LindseyGrahamResign,” the group posted.

Lindsey Graham should resign. Retweet if you agree. #LindseyGrahamResign — Democratic Coalition (@TheDemCoalition) May 14, 2019

The group wrote that Graham "has abdicated his responsibilities as a U.S. Senator and has clearly abandoned his oath to uphold the Constitution and defend the rule of law."

The Hill has reached out to Graham’s office for comment.

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The hashtag quickly gained momentum online, with more than 65,000 people using it on Twitter.

How fascinating.



Senator Lindsey Graham making a really good case to impeach Donald.



He doesn’t feel the same anymore because he sold his soul to the devil. But it’s important that we note—these folks aren’t naive. #LindseyGrahamResign

pic.twitter.com/Ft52QzVeT9 — Commander Slay (@natayiu) May 14, 2019

This brings back an old saying my friend Tommy used to say. “If it smells like crap it’s crap.” #LindseyGrahamResign Graham encourages Donald Trump Jr. to plead the 5th https://t.co/fpJ0sB3DiM — Ed Asner (@TheOnlyEdAsner) May 14, 2019

In his latest criminal act, Lindsey Graham told Donald Trump Jr to ignore a subpoena from the GOP-led Senate Intelligence Committee. That’s witness tampering & obstruction of justice — plain and simple. Graham crossed a red line and should resign immediately. #LindseyGrahamResign — Jon Cooper (@joncoopertweets) May 14, 2019

By telling Donald Trump Jr. to ignore a subpoena, the senator is violating his oath of office, defying our Constitution and further aligning with a man hellbent on authoritarian rule. #LindseyGrahamResign — Michelangelo Signorile (@MSignorile) May 14, 2019

The GOP-led Senate Intelligence Committee reportedly subpoenaed Trump Jr. after the president’s eldest son backed out of two scheduled interviews regarding the panel’s ongoing investigation into Russia's election interference, The Associated Press reported Tuesday.

Committee Chairman Richard Burr Richard Mauze BurrRep. Mark Walker says he's been contacted about Liberty University vacancy Overnight Defense: Trump rejects major cut to military health care | Senate report says Trump campaign's Russia contacts posed 'grave' threat Senate report describes closer ties between 2016 Trump campaign, Russia MORE (R-N.C.) told colleagues at a GOP caucus luncheon Thursday that Trump Jr. voluntarily agreed to be interviewed twice but later withdrew, three people familiar with the remarks told the AP.

Trump Jr. and the committee had been in negotiations since December and interviews were scheduled for March and April, sources familiar with Burr’s remarks told the news service.

Senators on the Intelligence Committee want to review Trump Jr.’s 2017 interview and ask further questions, the AP reported. The AP noted that Trump Jr.'s is the first known subpoena of a member of the president's immediate family.