Fueled by Coke Zero and a double-chocolate protein bar, Vice President Joe Biden is roiling, ranting, being his usual self. Five mayors and county executives listen in silence on the other end of a White House speakerphone as the Delaware ear bender tries to ride herd on the stampede for dollars known as the American Recovery and Reinvestment Act, the $787 billion monster that is the largest domestic-spending effort in U.S. history. "My rear end is on the line just like yours," Biden barks, surrounded by a flock of aides in his West Wing office. "I'm the guy in charge of this deal. So if this doesn't work, it's me."