A Republican bill to raise the US debt ceiling, cut spending and avert default on US debt is set for back-to-back votes in the House and Senate.
But House Speaker John Boehner's bill faces a conservative revolt, unanimous opposition by Senate Democrats and a White House veto threat.
Ahead of the votes, Republicans challenged Democrats to back the bill or take political blame for default.
Congress must raise the US debt limit by a deadline of next Tuesday.
http://www.bbc.co.uk/news/world-us-canada-14328183
Note: Update Record,28 July 2011 Last updated at 19:49 GMT