'National security issue': Ex-WH doctor raises alarms on Biden's mental health after bombshell report

FIRST ON FOX: A former White House physician turned Republican lawmaker says President Biden's mental fitness is a matter of "national security."

"The article's just documenting what I've been saying all along: he's not fit to be the commander-in-chief," Rep. Ronny Jackson, R-Texas, told Fox News Digital on Wednesday. "He's got significant issues, he shouldn't have the job. You know, it's a national security issue for us."

It comes after a bombshell report in The Wall Street Journal that cited interviews with 45 people over the course of several months, claiming that congressional leaders and others who have met with Biden have noticed he "appears slower now" and is "someone who has both good moments and bad ones."

Before being elected to Congress, Jackson served as the top White House physician to former Presidents Obama and Trump. He also served as chief medical adviser for the latter.

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The Journal's report has prompted furious pushback from the White House and its allies, who have dismissed it as a GOP-led hit piece.

However, Jackson pointed out that some of the commentary apparently came from Democrats. The report said, "Most of those who said Biden performed poorly were Republicans, but some Democrats said that he showed his age in several of the exchanges."

The Texas Republican speculated that it could be the beginnings of a political coup against the 81-year-old president.

"I think that the fact that it came out like this, and is so well sourced, tells me that this might be the left's first attempt to start laying the groundwork to get rid of him," Jackson said.

Jackson told Fox News Digital that he has sent five letters to