2020 will present a lot of potential downside in the market: Strategist

Dow futures jumped pre-market Wednesday on the news that China and the US reportedly reached a deal to phase out trade tariffs. Kathryn Rooney Vera, head of research & chief market strategist at Bulltick Capital Markets, and Andrew Slimmon, senior portfolio manager at Morgan Stanley Investment Management, join CNBC's "Squawk Box" to discuss.