With pressure mounting from the White House to cut back on soaring healthcare costs, an aide to Florida Sen. Bill Nelson said that the senator is seriously concerned such reductions could damage patient care in places such as Miami, where costs are among the highest in the nation. In addition, at a Miami press conference several political and healthcare leaders said reducing costs was crucial if the Obama administration was going to advance its plans for reform. "It has to be done everywhere," said Miami Mayor Manny Diaz.