According to Reuters, US senators from the Democratic and Republican parties have called on the Biden administration to share with the International Criminal Court information that could help in the prosecution of war crimes charges against Russian President Vladimir Putin.

Last week, a court issued a warrant for Putin’s arrest, charging him with the war crime of illegally deporting hundreds of children from Ukraine. The lawsuit would oblige the Court’s 123 member states to arrest Putin and hand him over to The Hague for trial if he sets foot on their territory.

In a letter to President Joe Biden from Democrats Dick Durbin, Bob Menendez, Richard Blumenthal and Sheldon Whitehouse and Republicans Lindsey Graham and Tom Tillis, Congress has passed legislation that gives the administration more flexibility in providing assistance to the ISS.

“However, months later, as the ICC works to build cases against Russian officials, including Putin himself, it appears that the United States has yet to share key evidence that could aid these prosecutions,” the letter said.

“Knowing your support for the important cause of accountability in Ukraine, we urge you to move quickly in supporting the work of the ICC so that Putin and his entourage know unequivocally that they will be held accountable and brought to justice for their crimes,” the letter said.

Although the United States is not a party to the ICC, Biden said last week that Putin had clearly committed war crimes, adding that the ICC’s mandate was justified.

Moscow has repeatedly denied allegations that its troops committed atrocities during their year-long invasion of the neighboring country, and the Kremlin has called the court’s ruling “null and void.”