Has the U.S. economy been slowed by a passing cold front or a deeper freeze?
That's the question Federal Reserve policymakers will be grappling with as they attempt to chart a course for raising interest rates at a two-day meeting that begins Tuesday.
There's virtually no chance the Fed will hike rates Wednesday after stating last month that an April move was unlikely. But investors will be scouring the central bank's post-meeting statement for clues as to whether a June liftoff remains a possibility.