"I will seek authorisation for the use of force from the American people's representatives in Congress," President Obama said.
He said Congressional leaders agreed to "schedule a debate and then a vote as soon as Congress comes back in session."
More top news
The EU flag symbolises unity between European countries.
Shadow business secretary Rebecca Long-Bailey has called for "immediate" relief to prevent thousands of companies going out of business.
A spokesperson criticised the behaviour of a "small number" of fans at the game between Birmingham City and the Wolverhampton Wanderers.