Actor Rob Lowe mocked Sen. Elizabeth WarrenElizabeth Ann WarrenDemocrats' CNN town halls exposed an extreme agenda Minorities, older adults push Biden to top of 2020 poll The difference between good and bad tax reform 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."

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His initial tweet came hours after President TrumpDonald John TrumpDemocrats' CNN town halls exposed an extreme agenda Buttigieg says he doubts Sanders can win general election Post-Mueller, Trump has a good story to tell for 2020 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 GillibrandThe Hill's Morning Report - Will Joe Biden's unifying strategy work? K Street support to test Buttigieg Kamala Harris backs putting third gender option on federal ID MORE (D-N.Y.), Kamala HarrisKamala Devi HarrisDemocrats' CNN town halls exposed an extreme agenda The Hill's Morning Report - Will Joe Biden's unifying strategy work? K Street support to test Buttigieg MORE (D-Calif.), and Rep. Tulsi GabbardTulsi GabbardGabbard: Trump, Pence 'try to hide the truth' of Saudi-inspired terrorist attacks from Christian supporters 2020 Dems rebuke Trump on Iran, say they'd put US back in nuclear deal New 2020 candidate Moulton on hypothetical Mars invasion: 'I would not build a wall' 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.