CHICAGO - Mayoral hopeful Rahm Emanuel, President Obama's former chief of staff, on Saturday blasted Wisconsin Gov. Scott Walker's move against state unions, which have triggered mass protests in Madison. Emanuel was asked about the Wisconsin situation by reporters at his Hyde Park campaign office--down the street from the Museum of Science and Industry and near the Lake Michigan shore. Emanuel stopped at the office as he sought to get out the vote on the South Side in advance of Tuesday's election to replace Mayor Daley, who is retiring. "I think what the governor there is doing is not just...