From today's New York Sun story, "Prostitution Case Features Prosecutors of Corruption":

During a court hearing in the case, at which the four people were arraigned, it emerged that all three of the assistant U.S. attorneys assigned to the prosecution are part of the U.S. attorney's public corruption unit. One is the bureau's chief, Boyd Johnson III. The unit investigates wrongdoing by both elected and nonelected officials and bureaucrats at various levels of government

Why was the federal public corruption unit investigating a prostitute ring? Was Spitzer the target all along?