Sen. Elizabeth Warren Elizabeth WarrenWarren, Schumer introduce plan for next president to cancel ,000 in student debt The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon No new taxes for the ultra rich — fix bad tax policy instead MORE (D-Mass.) tore into President Trump on Saturday over his efforts to dismantle Obama-era financial regulations, arguing that the real estate mogul's attacks on Wall Street during the campaign were "all talk."

Trump's "actions in his first 100 days have shown his tough talk against Wall Street and big corporations was just that: all talk," Warren wrote on Twitter.

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Trump signed a series of orders on Friday directing Treasury Secretary Steven Mnuchin to review Obama-era tax regulations and financial rules, including parts of the 2010 Dodd-Frank Act, which Trump vowed to dismantle while on the campaign trail.

One directs the Treasury Department to review the process by which financial institutions are designated "too big to fail." Another orders a review of the federal government's orderly liquidation authority, which creates a process for dissolving large financial firms.

In a series of tweets, Warren hammered the directives, and said that Trump's first 100 days in office have revealed a weak stance on Wall Street and an unwillingness to hold corporate and financial giants to account.

Candidate @realDonaldTrump talked a big game about standing up to Wall Street & big companies that stash profits overseas. (Yeah, right.) — Elizabeth Warren (@SenWarren) April 22, 2017

.@realDonaldTrump Yesterday, @realDonaldTrump signed orders that could make it harder to rein in "too big to fail" financial firms. https://t.co/sKeTb2fZtL — Elizabeth Warren (@SenWarren) April 22, 2017

.@realDonaldTrump Then @realDonaldTrump ordered a review of tax rules corporations find “burdensome,” like a crackdown on tax-dodging corporate inversions. — Elizabeth Warren (@SenWarren) April 22, 2017

.@realDonaldTrump .@realDonaldTrump’s actions in his first 100 days have shown his tough talk against Wall Street and big corporations was just that: all talk — Elizabeth Warren (@SenWarren) April 22, 2017

Warren, a progressive firebrand who is considered a potential Democratic presidential contender in 2020, previously served as a special adviser for the Consumer Financial Protection Bureau, which was established in the wake of the 2008 financial crisis to oversee consumer protection in the financial sector.