Krugman believes the US economy is wage-led

This is one thing that Krugman got right, and several heterodox economists did not.  In his critique of the myth of an economic miracle in Texas, he notes that:

"at a national level lower wages would almost certainly lead to fewer jobs — because they would leave working Americans even less able to cope with the overhang of debt left behind by the housing bubble, an overhang that is at the heart of our economic problem."

Which by the way, also means that soaking the rich, because they are job creators, makes a lot of economic sense.  It should be no surprise that jobless recoveries became common in the period in which real wages have stagnated!