Republican Texas Rep. Ronny Jackson, the former physician to the president, said Sunday on Fox News that Americans “need to know” if former President Joe Biden was really “in charge” during his sole White House term.

Jackson, who had served as the White House doctor for both Presidents Barack Obama and Donald Trump, compared the situation regarding Biden’s health in office to when President Woodrow Wilson suffered a stroke during his presidency.

“This is similar to what happened in 1919 with Edith Wilson as the First Lady, with Woodrow Wilson when he had a massive stroke, and he continued to be president for a year and a half after that, and it’s well documented that it was the physician to the president and the First Lady that kept him sequestered and that kept hidden from the press and were making the decisions about what was going on in this country,” Jackson told “Sunday Morning Futures” host Maria Bartiromo.