How investors can stay ahead of trade wars, impeachment talk

Trade wars and the possibility of an impeachment hang over the heads of investors. But Mary Lisanti, President and Portfolio Manager at Lisanti Capital says for investors the overriding issue is being able to identify companies that are on the leading edge of the 'change curve.' Mary talks with Julie Hyman, Adam Shapiro, Heidi Chung and Lending Tree's Tendayi Kapfidze.