“The Simpsons” turned down President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE for a guest appearance on the series, the show's executive producer said at Comic-Con on Saturday.

When asked if the show had ever turned down a celebrity guest appearance, Al Jean said, “Let’s just say he’s the president of the United States,” The Wrap reported.

Bill Oakley, a former writer for the show, also tweeted that he was relieved that Trump never made an appearance on the animated series.

"I continue to thank God that Donald Trump was never invited to do a voice on The Simpsons even during the brief period when he was popular,” he tweeted on Sunday.

I continue to thank God that Donald Trump was never invited to do a voice on The Simpsons even during the brief period when he was popular — Bill Oakley (@thatbilloakley) July 23, 2017

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The panelists at the convention in San Diego also briefly referred to an episode in 2000 that joked about a Trump presidency, with Executive Producer Matt Selman saying the show doesn’t only make “terrible” predictions.

“The Simpsons” has poked fun of the Trump administration before, releasing a clip in April that parodied the president's first 100 days in office.