Former Fox News anchor Geraldo Rivera made a commitment to stop Donald Trump's reelection Thursday.

Rivera, 80, appeared on The View to rail against Trump despite their personal relationship and the fact that the two are both from New York. The then-Fox News anchor even competed in Celebrity Apprentice, hosted by Trump.

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"Well, let me just say, first of all, that I am vowed to dedicate whatever energy I have left in the profession to ensure that [Trump] is not reelected president ever," Rivera said, which was received with applause from the audience.

"I think what he did in the days and weeks leading up to Jan. 6 and on Jan. 6 was so unforgivable. He stabbed the Constitution of the United States in the back," Rivera said. "And I really — even though I still have affection for him and remember the good times, because of that, he is disqualified, I believe, from ever being president of the United States again."

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Rivera did not vote for Trump in 2016, which he claims the then-president knew but "was always very nice," despite not getting his vote. Joy Behar admitted Trump was different before running for president, calling him a "New York character" and confessing she attended his wedding.

Fox News removed Rivera from its most popular show, The Five, after Rivera had been employed for 22 years. Rivera claimed he had about 18 months left in his contract but decided to quit rather than work on another program.