Mike Dudas, Metals and Mining Analyst for Vertical Research, on why gold is going to $1400 and Trump's aluminum tariffs. Brian Reynolds, Asset Class Strategist for Canaccord Genuity, on Wall Street buybacks driving the market. Katherine Chiglinsky, US finance reporter for Bloomberg, on Warren Buffett's annual shareholder letter and outlook for the joint health care venture with Amazon. Mike McDonough, Global Director of Economic Research at Bloomberg Economics, on China abolishing the term limit which would allow Xi Jinping to stay in power.