Actor Rob Lowe mocked Sen. Elizabeth WarrenElizabeth Ann WarrenWarren: Dershowitz presentation 'nonsensical,' 'could not follow it' On The Money: Stocks close with steep losses driven by coronavirus fears | Tax season could bring more refund confusion | Trump's new wins for farmers may not undo trade damage Overnight Energy: Sanders scores highest on green group's voter guide | Trump's latest wins for farmers may not undo trade damage | Amazon employees defy company to speak on climate change 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 TrumpWarren: Dershowitz presentation 'nonsensical,' 'could not follow it' Bolton told Barr he was concerned Trump did favors for autocrats: report Dershowitz: Bolton allegations would not constitute impeachable offense 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 GillibrandGOP-Biden feud looms over impeachment trial Sanders defends vote against USMCA: 'Not a single damn mention' of climate change The Hill's Morning Report — President Trump on trial MORE (D-N.Y.), Kamala HarrisKamala Devi HarrisBiden leads 2020 pack in congressional endorsements Harris on 2020 endorsement: 'I am not thinking about it right now' Panel: Is Kamala Harris a hypocrite for mulling a Joe Biden endorsement? MORE (D-Calif.), and Rep. Tulsi GabbardTulsi GabbardYang qualifies for New Hampshire debate stage Poll: Bernie Sanders holds 9-point lead in New Hampshire The establishment scam of 'unity' 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.