As politicians quarrel over a deal to raise the debt limit, Moody's joins Standard & Poor's in warning it might cut the U.S. credit rating.

The latest in the political discourse concerning the debt ceiling, and what people on the streets are saying.

Mark Zandi, chief economist with Moody's Analytics, explains the political differences between the two options for deficit cutting, and what it would mean to miss the August 2 deadline.

The national debt debates halted over the weekend as Congressional Democrats and Republicans reached a stalemate over tax cuts. As the deadline for a solution approaches, are investors getting nervous?