San Diego Mayor Bob Filner’s endurance in the face of mounting sexual harassment accusations may be driven by his need to get out of an even bigger problem: a federal criminal investigation that has received little attention from the national media. The San Diego Creeper is the subject of an FBI probe of what looks like a quid-pro-quo arrangement with a local developer. In June local media obtained a voicemail Tom Story of Sunroad Centrum Partners left for various city council members regarding a $100,000 “gift” he made to two public projects Filner favored. At the time, Sunroad was looking...