WEST PALM BEACH, Florida, Dec 28 (Reuters) - Elon Musk, the billionaire CEO of Tesla TSLA.O and SpaceX, vowed to go to "war" to defend the H-1B visa program for foreign tech workers late on Friday amid a dispute between President-elect Donald Trump's longtime supporters and his most recently acquired backers from the tech industry.

President-elect Donald Trump on Saturday sided with key supporter and billionaire tech CEO Elon Musk in a public dispute over the use of the H-1B visa, saying he fully backs the program for foreign tech workers opposed by some of his supporters.

The backlash heightened on the tech billionaire's social media platform X within the last week as Ramaswamy and Musk have faced scrutiny from some in the GOP, including far-right activist Laura Loomer and other hardline anti-immigration Republicans.

Elon Musk has admitted to taking a weight-loss drug in a Christmas Day post on X, formerly Twitter, as he shared a picture of himself wearing a Santa costume. "Ozempic Santa," the Tesla and SpaceX CEO posted alongside a photo of himself in the classic red outfit and white beard.

Elon Musk recently shared a playful post on X, revealing he uses Mounjaro, a weight loss drug, to achieve his thinner look.

This holiday season, Elon Musk is calling himself “Ozempic Santa.” Adorned in a Santa Suit on a photo posted to X, The Tesla founder indicates he’s taking one of the widely popular weight loss drugs,

The Tesla CEO argues the U.S. needs to court top talent after financing the loudest anti-immigration run in decades.

Elon Musk blasted a segment of the MAGA movement as “contemptible fools” and called for them to be ousted from the Republican Party. The tweet from the Tesla CEO and owner of X, formerly Twitter, was the latest salvo in what some are calling a “civil war” among the far right.

Amid increasing tension with MAGA-aligned conservatives, Musk warned that "hateful, unrepentant racists" within the Republican Party could lead to its downfall.