US debt crisis deepens ahead of vote

US debt crisis deepens ahead of vote Traders and investors sell down their holdings on the back of continued political brinkmanship as Wall Street writes to Obama over the dangers of a default or downgrade
http://link.ft.com/r/19JYUU/YBG4U9/FXWIVG/PR9UR0/IIIRK7/7V/h?a1=2011&a2=7&a3=28