Federal and state investigations made a high-profile raid of House Speaker Gordon Fox’s Statehouse office and East Side home late last month. Fox resigned the next day and a new speaker took the helm of the Rhode Island House of Representatives. But investigators have not said what sparked the probe, and little fresh information has emerged in the almost 4 weeks since the raid. Robert Clark Corrente served as Rhode Island’s top federal prosecutor from 2004 and 2009 and he’s now a partner with the Providence law firm of Burns & Levinson. Corrente stopped by our studio to talk about federal corruption probes.