The credit rating agency Fitch has placed the USA's 'triple-A' rating on a negative watch because of the ongoing stand-off in Congress.
Explaining its move, Fitch says that although it believes the debt ceiling will be raised soon, the "political brinkmanship and reduced financing flexibility could increase the risk of a US default".
More top news
After a mild and quiet night, the best of the sunshine will be across the south east.
The presumptive Democratic Presidential candidate said Kaine is everything Donald Trump is not as they shared a platform for the first time.
Team Sky's Chris Froome is set to win the 2016 Tour de France with an overall lead of four minutes 11 seconds after stage 20 to Morzine