Rudy Giuliani’s presidential campaign is increasingly concerned that the controversy swirling around former New York Police Department Commissioner Bernard Kerik could negatively impact his White House aspirations. Kerik pleaded guilty in 2006 to state conflict-of-interest charges for accepting $165,000 in gifts from an allegedly mob-linked construction firm. He currently faces a possible indictment from the U.S. attorney’s office for tax crimes and other offenses stemming from renovations to his Bronx apartment from the firm Interstate Industrial Corp., while he was corrections commissioner under then New York City Mayor Giuliani. Giuliani’s law partner Marc Mukasey has now been told to monitor...