The story

Sen. Barack Obama took his campaign to Miami, Florida, on Saturday with a message to the nation's mayors: I'll be your ally in Washington; Sen. John McCain will not.

Speaking to the U.S. Conference of Mayors, the presumptive Democratic presidential nominee praised McCain's service to the country but chastised him for not "proposing a strategy for American cities" hit hard by tough economic times.

"Because while Sen. McCain is a true patriot ... he won't be that partner. His priorities are very different from yours and mine. ... He isn't proposing a strategy for America's cities. Instead, he's calling for nearly $2 trillion in tax breaks for big corporations and the wealthiest Americans." Read full article »

CNN's Ed Hornick, Steve Brusk, Tasha Diakides, Alexander Marquardt, Rebecca Sinderbrand, Paul Steinhauser and Chris Welch contributed to this report.

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