US markets (^DJI, ^GSPC, ^IXIC) are still in negative territory but clawing back some ground ahead of Tuesday's market close. This comes after President Trump said the US would help protect oil (CL=F, BZ=F) shipments through a key Middle East shipping route, the Strait of Hormuz. ClearBridge Investments Senior Investment Strategy Analyst Josh Jamner joins Yahoo Finance host Josh Lipton to explain why steady oil supplies matter for stocks, why today's economy isn't as vulnerable to higher gas prices as it used to be, and more. To watch more expert insights and analysis on the latest market action, check out more Market Domination.