Jimmy Carter spotted en route to DC
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Former President Jimmy Carter was spotted on a flight en route to Washington on Thursday for President-elect Donald TrumpDonald TrumpFormer New York state Senate candidate charged in riot Trump called acting attorney general almost daily to push election voter fraud claim: report GOP senator clashes with radio caller who wants identity of cop who shot Babbitt MORE's inauguration.

Carter walked up and down the aisle of a Delta Air Lines flight that left Atlanta, shaking hands with passengers, according to an Atlanta Journal Constitution report.

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Carter was the first former president to say he would attend Trump's Jan. 20 swearing-in ceremony.

Former President Bill ClintonWilliam (Bill) Jefferson ClintonThe Koreas are talking again — Moon is for real, but what about Kim? For families, sending money home to Cuba shouldn't be a political football Anything-but-bipartisan 1/6 commission will seal Pelosi's retirement. Here's why MORE and his wife, Hillary ClintonHillary Diane Rodham ClintonBiden says Russia spreading misinformation ahead of 2022 elections Highest-ranking GOP assemblyman in WI against another audit of 2020 vote Women's March endorses Nina Turner in first-ever electoral endorsement MORE, the 2016 Democratic presidential nominee, announced earlier this month that they would also attend the inauguration, along with former President George W. Bush.

George H.W. Bush, the nation's 41st president, will not attend. He wrote in a letter to the president-elect that he was not well enough to make an in-person appearance.

"My doctor says if I sit outside in January, it likely will put me six feet under. Same for Barbara. So I guess we're stuck in Texas," Bush wrote earlier this month.

Bush is currently hospitalized after undergoing a procedure to clear his airways on Wednesday.

Carter endorsed Hillary Clinton during the 2016 campaign, though he noted that neither her nor Trump were “quite unpopular.”