Following a big day for U.S. equities on Monday, where the Dow took back its lead to close nearly 2% higher, stock index futures are debating their next direction. The wary atmosphere comes before Powell makes his next appearance, this time testifying before Congress. He's likely to reiterate job growth will pick up in the coming months and price pressures should ease, but may invite fresh talk about interest rate hikes or the Fed's bond-buying program.Bigger picture: "The market is in a very fragile, emotional state," said Altaf Kassam of State Street Global Advisors in Europe. "It will be a rocky road, it will be bumpy and pronouncements from central bankers are going to get very quick, knee-jerk responses." Powell will take the stage at 2 p.m. ET before the U.S. House of Representatives Select Subcommittee on Coronavirus Crisis.Over in Washington, President Biden held separate infrastructure talks on Monday with two