Nancy Pelosi just got a very public “fact check” from the man who was in charge of Capitol security on January 6 — and it’s not a good look for the former House Speaker.

The California Democrat unloaded on President Donald Trump Monday after he announced a sweeping federal crime crackdown in Washington, D.C., taking direct control of the Metropolitan Police Department and activating the D.C. National Guard to patrol the streets.

“Donald Trump delayed deploying the National Guard on January 6th when our Capitol was under violent attack and lives were at stake,” Pelosi fumed. “Now, he’s activating the D.C. Guard to distract from his incompetent mishandling of tariffs, health care, education and immigration — just to name a few blunders.”

It didn’t take long for former U.S. Capitol Police Chief Steven Sund — who resigned after the Jan. 6 riot — to hit back, and hard.

“Ma’am, it is long past time to be honest with the American people,” Sund said in a scathing statement. He recounted how on January 3, 2021, just three days before the riot, he formally requested National Guard support. That request, he says, was shot down by Pelosi’s own Sergeant at Arms.

“Under federal law (2 U.S.C. §1970), I was prohibited from calling them in without specific approval,” Sund explained. “That same day, Carol Corbin at the Pentagon offered National Guard support, but I was forced to decline because I lacked the legal authority.”