The Chris Christie and Rand Paul feud just got more fired up.

Christie, the newest GOP presidential candidate, lashed out against the Kentucky Senator Sunday for fundraising during his nearly 11-hour Senate speech against US national surveillance programs.

“He’s wrong and what he’s done has made American weaker and more vulnerable,” Christie said on Fox News Sunday. “And he’s done it and then cut his speeches and put them on the Internet to raise money off of them. He’s politicizing America’s national security.”

The New Jersey governor offered a full-throated defense of the Patriot Act and the surveillance tools it affords law enforcement, whereas Paul, a civil libertarian, has been an outspoken advocate for more restrictions on surveillance of Americans’ data.

The GOP presidential rivals have publicly sparred over National Security Agency tactics and spending for years. Christie once called Paul’s foreign policy “dangerous” and Paul shot back at Christie’s spending policies, calling him the “king of bacon.”

Full of gusto as a newly minted presidential candidate, Christie also took same jabs at other opponents.

Christie criticized Donald Trump for wanting to build a “great wall’ along the Southern border.

“I know the human spirit. I haven’t found a wall that can be built that a determined human being can’t get over, under or around,” Christie said.

He’s advocating for more fencing in certain areas, more drone surveillance, more border patrol agents and requiring employers to use the E-Verify citizen check system.

Democratic front-runner Hillary Clinton has called for immigration reform that allows for a pathway of citizenship (and voting privileges). Christie said Clinton has the wrong approach.

“These folks are coming across the border not to vote, like Hillary Clinton would lead you to believe,” he said. “They’re coming to work.”