Let's put it this way. Imagine a secret meeting between Barack Obama, Tim Geithner and Bernie Madoff.
O: Look Bernie, we know you're a liar and a thief and under ordinary circumstances we would love to toss you in jail.
G: But your operation has become too big to fail. If we blew the whistle, the whole world economy might go into an irreversible death spiral and all my billionaire friends and I would be completely -- and I mean totally -- wiped out.
O: So here's a trillion dollars of taxpayer money to keep your scam afloat for another year or so, until we can figure out what to do next.
M: But won't that just perpetuate the same old Ponzi scheme I started back in the 70's?
O and G (in unison): Well, duh!