President 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 on Saturday invited his former Democratic presidential rival to try again in 2020.

He attacked 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 as “the worst (and biggest) loser of all time,” in a tweet.

“Crooked Hillary Clinton is the worst (and biggest) loser of all time. She just can’t stop, which is so good for the Republican Party. Hillary, get on with your life and give it another try in three years!” Trump tweeted.

Crooked Hillary Clinton is the worst (and biggest) loser of all time. She just can’t stop, which is so good for the Republican Party. Hillary, get on with your life and give it another try in three years! — Donald J. Trump (@realDonaldTrump) November 18, 2017

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Trump has said that he wants Clinton to run against him again in 2020, but she claims that her career as an "active politician” is over.

He called for the FBI and Department of Justice to investigate Clinton and the Democratic National Committee (DNC) after it was revealed the Clinton campaign had entered into a joint fundraising agreement with the DNC in 2015.

"Everybody is asking why the Justice Department (and FBI) isn't looking into all of the dishonesty going on with Crooked Hillary & the Dems...New Donna B book says she paid for and stole the Dem Primary," Trump tweeted earlier this month.

"What about the deleted E-mails, Uranium, Podesta, the Server, plus, plus...People are angry. At some point the Justice Department, and the FBI, must do what is right and proper. The American public deserves it!" he added.

Trump’s latest attack against his former opponent comes just hours after Clinton slammed Trump for not taking responsibility for sexual assault allegations made against him.

She said that Sen. Al Franken Alan (Al) Stuart FrankenGOP Senate candidate says Trump, Republicans will surprise in Minnesota Peterson faces fight of his career in deep-red Minnesota district Getting tight — the psychology of cancel culture MORE (D-Minn.) had taken “accountability” for his actions after a radio host accused him of forcibly kissing and groping her.

"I don't hear that from Roy Moore or Donald Trump," Clinton said in an interview Friday, referring to the Republican Senate candidate in Alabama accused of sexual misconduct involving teenagers. "Look at the contrast between Al Franken, accepting responsibility, apologizing, and Roy Moore and Donald Trump who have done neither."

— Updated 9:04 a.m.