Jonathan Turley, professor, The George Washington University
David Bruck, director, Virginia Capital Case Clearinghouse
There's little doubt about who's responsible for the shootings in Tucson last month. Dozens of people watched as the suspect shot congresswoman Gabrielle Giffords and then turned his gun on the crowd. But Jared Loughner plead not guilty to federal charges, and now his life may rest on his lawyer.