Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE's campaign was quick to fire back at Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE, after the presumptive GOP presidential nominee criticized President Obama's endorsement of Clinton on Thursday.

"Delete your account," the presumptive Democratic nominee's account tweeted at Trump, after he posted that "nobody" wanted four more years of Obama. Tweets authored by the candidate herself generally include "-H" at the end, a shorthand signature of sorts.

Obama just endorsed Crooked Hillary. He wants four more years of Obama—but nobody else does! — Donald J. Trump (@realDonaldTrump) June 9, 2016

Shortly after the Twitter back and forth, White House press secretary Josh Earnest was informed during the daily briefing that Trump had tweeted about the president’s move.

.@jonkarl: Trump had a tweet about POTUS endorsement

.@PressSec: "I am not surprised." — Jordan Fabian (@Jordanfabian) June 9, 2016

It is the most-retweeted tweet of campaign to date, according to the Clinton Social Media Director Alex Wall.

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It had more than 120,000 retweets just an hour after being sent.

This is now the most retweeted tweet of the campaign! https://t.co/4hhujDNeTN — Alex Wall (@AlexBWall) June 9, 2016

Obama formally endorsed Clinton for president in a video released just an hour after he met at the White House on Thursday with her rival, Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE.