Fox News host Tucker Carlson has a new conspiracy theory. Carlson said he thinks the reason behind former President Barack Obama not publicly endorsing former Vice President Joe Biden as the Democratic presidential nominee is that the former First Lady Michelle Obama might throw her hat in the ring. Carlson noted that former Obama adviser David Axelrod‘s attacks on Biden support his theory.

Carlson said, “If Obama had endorsed Joe Biden, the race would be over. Obama hasn’t endorsed Joe Biden because he doesn’t want to endorse Joe Biden. Why? Maybe, he’s got other plans.”

Carlson observed that the former first lady could unexpectedly jump into the Democratic presidential race for the 2020 elections. He thinks that if selected as the Democratic presidential candidate, Michelle could forge unity in the divided Democratic Party and paper over the cracks in the party along the lines of sex, race and class.

“Don’t bet against Michelle Obama. Last week, the former first lady issued a statement saying that she has no interest in being president,” Carlson said. “That’s what she claimed. But there are signs that that’s not true.”

Michelle’s international bestselling book has forced her to go on book tours and address crowds. Barack’s new presidential memoir will be released next year in the middle of the Democratic primaries.