Mayor Michael R. Bloomberg of New York City intensified his attacks on the political leadership here on Wednesday, pointing to what he called the government’s failure to fix immigration policy and other problems of immediate concern to the nation.

In a speech before a group of his fellow mayors, Mr. Bloomberg described Washington politicians as shortsighted and said their priorities often reflected crass political calculations rather than sound policy judgments.

“We all know that spending decisions in Washington are driven by whatever will attract votes and campaign cash,” he said in criticizing the government for running up enormous budget deficits over the last few years.