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New Jersey Gov. Chris Christie announced that he's endorsing Donald Trump for president, calling the billionaire businessman a "strong and resolute leader."

"I am proud to be here to endorse Donald Trump for president of the United States," he said.

Christie said his family has been friends with Trump's for years and have done a lot of good together.

"I absolutely appreciate him as a person and as a friend," he said.

Christie said Trump was best "prepared to provide America with the strong leadership that it needs both at home and around the world."

"Donald Trump is someone who when he makes a promise, he keeps it. I've experienced that over my long friendship with him, and what the American people and our allies around the world are going to understand is that Donald Trump is someone who keeps his word, and that means America will keep its word again."

Christie also said Trump is the best choice to defeat Hillary Clinton in the general election.

Watch the endorsement above.

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