U.S. Sen. Brian Schatz on Monday announced he is backing Sen. Tim Kaine (D-Va.) in introducing a war powers resolution regarding Iran.

Kaine’s resolution, which features Sen. Dick Durbin (D-Ill.) as an original co-sponsor, aims to force a debate and vote in Congress to prevent further escalation of hostilities with Iran.

That’s according to a press release from Kaine’s office Friday.

“For years, I’ve been deeply concerned about President Trump stumbling into a war with Iran,” said Kaine. “We’re now at a boiling point, and Congress must step in before Trump puts even more of our troops in harm’s way. We owe it to our service members to have a debate and vote about whether or not it’s in our national interest to engage in another unnecessary war in the Middle East.”

In his own press release three days later, Schatz, a fellow Democrat from Hawaii, said, “Congress, not the president, has the constitutional authority to declare war, and I oppose a war with Iran. No one mourns the death of Iranian Major General Qasem Soleimani, a ruthless terrorist responsible for the deaths of thousands, including hundreds of Americans.”

Schatz continued: “However, President Trump’s decision to kill him outside Baghdad airport carries serious strategic consequences for which he was unprepared, including the unraveling of our relationship with Iraq, undermining our ability to prevent ISIS’s return, and putting U.S. diplomats and service members in Iraq and the region in danger.”

The Senate is controlled by Republicans.

In the Democrat-controlled House of Representatives, meanwhile, NBC News reported Monday that House Speaker Nancy Pelosi (D-Calif.) said the House will “vote soon” on a war powers resolution to limit Donald Trump’s military actions after he ordered the killing of the top Iranian general last week.