Former New Jersey Gov. Chris Christie said Trump made the country "smaller by dividing us even further and pitting one group against another."

Former New Jersey Gov. Chris Christie filed paperwork with the Federal Election Commission, which officially triggers a 2024 Republican presidential campaign, his second White House run

Former New Jersey Governor Chris Christie is entering the 2024 race for the White House with one mission: to torpedo Donald Trump's campaign. But his low popularity among Republicans may thwart his efforts to launch a head-on attack.

Chris Christie made his 2024 Republican campaign official, calling former President Trump "a lonely, self-consumed, self-serving mirror hog."

Christie's bid could inject a dose of anti-Trump criticism into a Republican primary field that has largely been reluctant to cross its leading candidate.

STORY: Donald Trump supporter turned critic Chris Christie joined the Republican race for president on Tuesday,attacking the man he became an adviser to during the 2016 election. "Let me be very clear.