Ben Carson, a neurosurgeon and conservative Christian celebrity, announced Sunday he's running for president.

A formal declaration is expected later on Monday in Detroit.

Appearing on CBS affiliate WPEC, Carson said that he is ready to be a part of the “equation.”

“Many people have suggested to me that I should run for president, even though I'm not a politician,” he said. “I began to ask myself, why are people clamoring for me to do this? … I'm not 100 percent sure politics as usual is going to save us.”

According to The Washington Post, nearly $16 million has been raised to support Carson's attempt to win the 2016 Republican presidential nomination.

In March, Carson was forced to apologize for saying that he opposes marriage equality because being gay is a choice. To drive home his point, he said: “A lot of people go into prison straight and when they come out they're gay.”

(Related: Ben Carson backtracks on saying prison can make you gay.)

He also recently made headlines when he warned against pressuring bakers opposed to marriage equality because they might poison the wedding cakes of gay coupes.

On Sunday, he told WPEC that he has learned from his mistakes: “I don't wander off into those extraneous areas that can be exploited. I have learned that.”