The United States’ war with Iran is entering its third week, but Congress has yet to publicly test the Trump administration’s case for the conflict.

Republicans in Congress have so far side-stepped public debate over the war, even as Senate Democrats reach for every tool at their disposal to demand hearings with Trump administration officials. Increasingly frustrated, Democrats are threatening this week to force a series of votes on the war, hoping that the effort to gum up the Senate’s voting schedule will prod Republicans to action.

“We’ve had no oversight whatsoever over what the executive is doing as we’re spending a billion dollars a day, and we have failed to have any real substantive debate or discussion,” said Sen. Cory Booker, D-N.J.