President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE joked during his reelection campaign kickoff rally Tuesday night that he would get the "electric chair" if he deleted even one email to first lady Melania Trump Melania TrumpThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power FBI director casts doubt on concerns over mail-in voting fraud Trump: 'We could hardly hear' boos, chanting at Supreme Court MORE.

Trump made the joke while discussing emails from a private server used by his 2016 presidential rival Hillary Clinton Hillary Diane Rodham ClintonFox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio Trump, Biden court Black business owners in final election sprint The power of incumbency: How Trump is using the Oval Office to win reelection MORE from her time serving as secretary of State that were later deleted.

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"Can you imagine if I got a subpoena?" he said in Orlando.

"If I got a subpoena for emails, if I deleted one email, like a love note to Melania, it's the electric chair for Trump," he said.

Trump, who has criticized Clinton over the issue going back to the 2016 presidential race, suggested the emails might still be found "somewhere deep in the State Department."

"We now have a great attorney general. Let’s see what happens," he said.

The Trump administration has defied several subpoenas of its own in recent weeks, including a demand for Trump's tax returns.