DENVER - Moderate Democrats think they have the key to winning back power in Washington and across the country - a package of economic proposals aimed at giving every American a shot at reaching the middle class. "We thought it was important and necessary to rekindle the American dream," said Gov. Tom Vilsack of Iowa, a potential 2008 presidential candidate and the chairman of the Democratic Leadership Council, a centrist think tank. [snip] The centrist organization, best known for helping Bill Clinton secure the White House in 1992, was to unveil Monday its "American Dream Initiative," which lays out policies...