Here is the message members of Congress should send to Ben Bernanke during the Fed chief’s annual Capitol Hill testimony this week: He is fighting for his job. With his term up in January of next year, Bernanke needs to be called to account for the Fed’s many questionable actions during the financial turmoil of the past year.

Even while correctly identifying the “global savings glut,” Bernanke sat by and did nothing about the unsustainable build-up of leverage in the housing market—the “bubble” which famously burst in late 2008. Bernanke also used Fed financing to bail out Bear Stearns and AIG—hotly political moves which should rightfully have been left to Congress—and oversaw the massive expansion of the Fed’s balance sheet from about $900 billion to over $2 trillion. Under Bernanke, the Fed has transcended monetary policy and bank supervision into the world of fiscal policy.

While thus politicizing the Fed on one hand, Bernanke has sought to insulate the bank from congressional pressures by appeasing majority Democrats with various new credit regulations. Both the recently proposed credit card and mortgage rules unnecessarily restrict credit and increase the litigation risk facing banks, while doing nothing to roll back some of the irresponsible lending policies that exacerbated the housing bubble.

Bernanke’s pandering to the Left on misguided “consumer protections,” and the absence of any debate over the Fed’s role in the housing bubble, raise serious questions as to whether Bernanke understands the causes of the current financial crisis. We cannot hope to avoid the next financial crisis without a Fed chairman who understands the current one.