Charles Schwab's Liz Ann Sonders on China: Too much damage has been done

China has vowed to "take necessary countermeasures" over the U.S. plans for new tariffs on Chinese imports. What does this mean for markets and how should investors be positioning themselves? Charles Schwab's Liz Ann Sonders talks with Julie Hyman, Dan Roberts and Adam Shapiro as well as Lending Tree's chief economist, Tendayi Kapfidze.