Education Secretary Betsy DeVos is a major investor in Neurocore, a company based in Michigan that claims to help kids with various attention deficit disorders. Since taking office, she's kept her stake in the company and invested even more money in it. In the third and final installment of "Ethics Be Damned," APM Reports investigative journalist Tom Scheck joins Lizzie O'Leary of Marketplace Weekend to parse DeVos' potential conflicts of interest. Plus, what happens if watchdog groups use ethics as a political weapon? To read Tom's full investigation, visit apmreports.com/ethics.