Top Republicans in the Senate are advancing a campaign of disinformation over the debt ceiling as they seek to distort the reasons for needing to raise the nation’s borrowing cap, after they dropped their blockade on averting a US debt default in a bipartisan manner.

The Senate on Thursday passed a bill to allow the debt ceiling to be raised by $480bn through early December, which the treasury department estimates will be enough to allow the government to temporarily avert an unprecedented default on $28tn of debt obligations.

Senate majority leader Chuck Schumer announced...