Hillary ClintonHillary Diane Rodham Clinton3 ways government can help clean up Twitter Intelligence Democrat: Stop using 'quid pro quo' to describe Trump allegations The Memo: Bloomberg's 2020 moves draw ire from Democrats MORE fired back on Tuesday after President TrumpDonald John TrumpThis week: House kicks off public phase of impeachment inquiry Impeachment week: Trump probe hits crucial point Judd Gregg: The big, big and bigger problem MORE mocked her decision not to run for president again in 2020.

The former secretary of State and 2016 Democratic presidential nominee tweeted out a gif from the movie “Mean Girls” in which Regina George, played by Rachel McAdams, asks Lindsay Lohan’s character, “Why are you so obsessed with me?”

Clinton remains one of Trump’s signature foils on social media, with the president often tweeting about her more than two years after her 2016 electoral defeat.

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The president's latest jab at Clinton came Tuesday after she announced she would not run for the White House again next year.

“ ’(Crooked) Hillary Clinton confirms she will not run in 2020, rules out a third bid for White House.’ Aw-shucks, does that mean I won’t get to run against her again? She will be sorely missed!” he tweeted.

Clinton was widely favored in polls over the then-businessman in 2016, but was dogged by allegations of misconduct after Trump framed the race as a referendum on Clinton’s character, making questions over her use of a private email server a centerpiece of the campaign.

Sources close to Clinton have told The Hill that while she will not make a White House run of her own next year, she will actively fundraise and work to unify a fractured party.