Democratic Rep. Jerrold Nadler (N.Y.) on Friday resurfaced an old tweet from President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE criticizing his predecessor for striking Syria without congressional approval after Trump announced his own military strikes in Syria.

Trump authorized airstrikes in Syria on Friday in retaliation for an apparent chemical weapons attack the U.S. has blamed on Syrian leader Bashar Assad. Nadler said he agreed with the measure but said Trump needed to get congressional approval for such an action.

Nadler resurfaced several old Trump tweets in which he slammed former President Obama for authorizing similar airstrikes.

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“The President must get Congressional approval before attacking Syria-big mistake if he does not!” Trump tweeted in August 2013.

“What will we get for bombing Syria besides more debt and a possible long term conflict? Obama needs Congressional approval,” Trump wrote in another tweet around the same time.

The President must get Congressional approval before attacking Syria-big mistake if he does not! — Donald J. Trump (@realDonaldTrump) August 30, 2013

What will we get for bombing Syria besides more debt and a possible long term conflict? Obama needs Congressional approval. — Donald J. Trump (@realDonaldTrump) August 29, 2013

Nadler called Assad a “monster who committed war crimes against his own people" but said that doesn't give Trump the authority to retaliate without informing Congress.

“As I said in 2013, under Pres. Obama, Constitution requires congressional authorization for use of military force in Syria,” Nadler tweeted. “Previous 9/11-related authorization doesn’t cover strike on Syrian gov’t. @realDonaldTrump's actions tonight appear to be unlawful if not unconstitutional."

As I said in 2013, under Pres. Obama, Constitution requires congressional authorization for use of military force in Syria. Previous 9/11-related authorization doesn't cover strike on Syrian gov't. @realDonaldTrump's actions tonight appear to be unlawful if not unconstitutional. — (((Rep. Nadler))) (@RepJerryNadler) April 13, 2018

Vice President Pence, who is in Lima, Peru, returned to his hotel on Friday night to make secure phone calls to congressional leaders to inform them about the strikes in Syria.

Pence's deputy chief of staff and communications director told reporters that Pence spoke with Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (R-Wis.) ahead of Trump's announcement of the strikes in Syria.

Pence also spoke with House Minority Leader Nancy Pelosi Nancy PelosiPelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare House lawmakers reach deal to avert shutdown Centrist Democrats 'strongly considering' discharge petition on GOP PPP bill MORE (D-Calif.) and Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellPelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Senate GOP aims to confirm Trump court pick by Oct. 29: report Trump argues full Supreme Court needed to settle potential election disputes MORE (R-Ky.), the aide said. An aide to the vice president sent an email to staff for Senate Minority Leader Charles Schumer Chuck SchumerSenate Democrats introduce legislation to probe politicization of pandemic response Schumer interrupted during live briefing by heckler: 'Stop lying to the people' Jacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee MORE (D-N.Y.), who was on a flight and unable to connect by phone, according to pool reports.