SACRAMENTO — For the first time since the Capitol's "Shrimpgate" scandal more than a decade ago, California legislators open their session today knowing that the FBI is hovering not far away. By issuing subpoenas, conducting searches and convening grand juries in Oakland and Sacramento, the feds have made their presence unmistakable as they investigate dealings by the new state Senate leader, Don Perata, and Secretary of State Kevin Shelley, a former legislator. Both men are Democrats. The scope of the inquiries, which are not connected, is not known. But interviews and documents that have become public suggest that the FBI...