One of the best investments a department or agency can make is a good, well-staffed inspector general office. But too often, political appointees get in the way of IG investigations. That's according to a study coming out of the Brookings Institution. John Hudak, senior fellow in governance studies at Brookings and a co-author of the study along with senior research assistant Grace Wallach. They talked about their work on Federal Drive with Tom Temin.