Federal Reserve chair Powell: Will he stay or will he go?

This is shaping up to be a momentous week for the Federal Reserve. What comes next for the Fed’s leadership has come into clearer focus in the last three days, but one big question hangs over the institution. The big picture: On Wednesday, the Senate Banking Committee is set to advance Kevin Warsh’s nomination to lead the Fed, after Sen. Thom Tillis (R-N.C.) indicated his…