US “megabanks”: Too-big-to-fail or just too big to survive?

This is a link to an article which appears in yesterday’s FT which describes a bill introduced into Congress by Sherrod Brown (Democrat) and David Vitter (Republican) under which banks with more than USD 500 billion in assets would be required to meet a new capital requirement of 15%.  At this stage, it seems that the prospects of the bill becoming law are slim, but ultimately only time will tell.