US Federal Reserve Chairman Ben Bernanke's semi-annual testimony on monetary policy before the Congress is one of the key market-moving events. Especially this time, it will be Bernanke’s last time in front of Congress before his term ends in 2014. Bernanke heads to Capitol Hill on Wednesday and Thursday, first going up to the House Financial Services Committee to deliver the semi-annual monetary policy report, and the next day heading to the Senate Banking Committee. Now, the markets have…