A Long-Time D.C. Investigator Talks House and Senate Oversight

Also, Nasdaq raises some early concerns about market-structure overhaul in meeting with SEC commissioner

Friday Q and A: Today we’re talking about investigations and congressional oversight – what may be coming in the House and Senate, and also whether any of the Republican-threatened probes of regulators and financial executives will have an impact. To delve into these topics we dialed up Eric Thorson, who may be best known as the longest-serving inspecto…