Obama in Detroit; Arizona Immigration; WikiLeaks; Rangel

Obama gave a rousing speech in Detroit, where he says the stimulus has helped the area's economy but reminded everyone that the road ahead is hard. Is this a precursor to story line for the November elections? Will it result in a setback for the Democrats? The Arizona immigration law suffered a temporary setback and the legal arguments in the case fascinate Tony. Will WikiLeaks' revelations put troops in harm's way? And Charlie Rangel's been accused of a number of ethical violations. How will his trial affect the Democrats running in November? (Arianna Huffington is away.)

Banner image: President Barack Obama delivers remarks at General Motors Auto Plant in Hamtramck, Michigan, one of nine that GM recently kept open during a scheduled summer shutdown in production. July 30, 2010. Official White House photo: Chuck Kennedy