US President Barack Obama has briefed Congressional leaders on his plans to fight against Islamic State militants in Iraq and Syria.
The talks came ahead of a speech on Wednesday night in which he will make a case directly to the American people, reports BBC.
Obama discussed his strategy with leaders from both parties at the White House.
The White House described the meetings as "productive" and said Obama had the authority to act against IS.
Tuesday's meeting with Congressional leaders came a year after lawmakers blocked Obama's previous plans for missile strikes against Syria.
Obama has ruled out the possibility of a US ground operation against IS but has signalled he may expand airstrikes to include Syria.
"Over the course of months, we are going to be able to not just blunt the momentum of [IS]," he said on Sunday. "We are going to systematically degrade their capabilities; we're going to shrink the territory that they control; and, ultimately, we're going to defeat them."
At the White House on Tuesday, he met Democrats Senate Majority Leader Harry Reid and House Minority Leader Nancy Pelosi, and Republicans John Boehner, the speaker of the House of Representatives, and Mitch McConnell, the Senate minority leader.
"The president, vice-president and congressional leaders had a productive discussion and the leaders expressed their support for efforts to degrade and ultimately destroy [IS]," the White House said in a statement.
The White House said Mr Obama had told the congressional leaders he welcomed action from Congress in support of the effort and pledged "continuing extensive consultation".
But Obama's aides suggested he would not seek new authorisation from Congress for military action.
"The president told the leaders that he has the authority he needs to take action against [IS] in accordance with the mission he will lay out in his address tomorrow night," the White House said.