Actor Rob Lowe mocked Sen. Elizabeth WarrenElizabeth Ann WarrenThe Hill's Morning Report — Mueller aftermath: What will House Dems do now? Warren spends big on staff in high-stakes 2020 gamble On The Money: Inside the Mueller report | Cain undeterred in push for Fed seat | Analysis finds modest boost to economy from new NAFTA | White House says deal will give auto sector B boost MORE (D-Mass.) and her past claims of Native American ancestry on Saturday following her presidential campaign announcement.

In a tweet Saturday afternoon, the 'West Wing' actor joked that the senator's candidacy would give new meaning to the title "Commander in Chief."

"Elizabeth Warren would bring a whole new meaning to Commander in 'Chief,'" Lowe wrote.

He later deleted the post, saying it was a "joke."

ADVERTISEMENT

His initial tweet came hours after President TrumpDonald John TrumpGrassroots America shows the people support Donald Trump Trump speaks to rebel Libyan general attacking Tripoli Dem lawmaker: Mueller report shows 'substantial body of evidence' on obstruction MORE made a similar remark on Twitter that appeared to reference the 1833-1850 Trail of Tears, a forced relocation of thousands of Native Americans.

"Today Elizabeth Warren, sometimes referred to by me as Pocahontas, joined the race for President. Will she run as our first Native American presidential candidate, or has she decided that after 32 years, this is not playing so well anymore? See you on the campaign TRAIL, Liz!" Trump tweeted earlier in the day.

Warren, who announced earlier late last year that she was exploring a 2020 bid for president, announced the official start of her campaign on Saturday in Lawrence, Massachusetts on Saturday. The senator joins a crowded field of Democratic contenders including Sens. Kirsten GillibrandKirsten Elizabeth GillibrandButtigieg says he wouldn't be opposed to having Phish play at his inauguration 2020 Dems call on Mueller to testify about redacted report 2020 Dems blast Barr's defense of Trump before Mueller report's release MORE (D-N.Y.), Kamala HarrisKamala Devi HarrisFive former Obama ambassadors back Buttigieg Harris: Integrity of US justice system 'took a real blow' with Barr's actions Sanders announces first endorsements in South Carolina MORE (D-Calif.), and Rep. Tulsi GabbardTulsi GabbardSeveral 2020 Dems say they're ready to face Fox News town hall More than one in 10 in new poll say men are 'better suited emotionally' for politics Buttigieg second most talked-about candidate on cable news shows: analysis MORE (D-Hawaii).

She has faced criticism in the past and has apologized for claiming Native American ancestry, noting earlier this month that she understands the difference between DNA indicating a possible Native American ancestor and tribal heritage.

--This report was updated on Feb. 10 at 8:43 a.m.