United States Conference  of Mayors Vice President Seattle Mayor Greg Nickels, center, faces reporters during the opening news conference at the mayors meeting as Burnsville, Minn. , Mayor Elizabeth Kautz, left, Miami Mayor Manuel Diaz, third from left, and Los Angeles Mayor Antonio Villaraigosa, second from right, look on, in Providence, R.I. , Friday, June 12, 2009. AP Photo logo AP Photo 5 months ago

United States Conference of Mayors Vice President Seattle Mayor Greg Nickels, center, faces reporters during the opening news conference at the mayors meeting as Burnsville, Minn. , Mayor Elizabeth Kautz, left, Miami Mayor Manuel Diaz, third from left, and Los Angeles Mayor Antonio Villaraigosa, second from right, look on, in Providence, R.I. , Friday, June 12, 2009.