US President Joe Biden was optimistic on Monday that Congress would adopt an agreement this week to avoid a default. "I'm never going to say I'm confident about what Congress is going to do, but I feel things right," he told reporters before leaving the White House.

The debt deal is due to be considered this week by Congress, with the Republican-dominated House of Representatives set to vote on it on Wednesday. Then it will be the turn of the Senate, where the Democrats have a narrow majority.