Rep. Al Green (D-Texas) filed an article of impeachment against President Trump on Tuesday, accusing the president of failing to notify or seek authorization from Congress before the U.S. launched strikes on three Iranian nuclear sites over the weekend.

The resolution alleges “abuse of presidential powers by disregarding the separation of powers—devolving American democracy into authoritarianism by unconstitutionally usurping Congress’s power to declare war.”

“President Trump’s unilateral, unprovoked use of force without congressional authorization or notice constitutes an abuse of power when there was no imminent threat to the United States, which facilitates the devolution of American democracy into authoritarianism,” Green’s resolution reads.

Congress has the sole power to “declare war” under the Article 1 of the U.S. Constitution. Presidents of both parties have struck adversaries without approval from the legislature.