Actually, for the misinformed [on both sides of the issues, because lord knows you guys are idiots] our economy was largely impacted by the housing crash. George Bush's administration wasn't as giving as past presidential admin's in terms of foreign aid. So to blame that would be retarded.
Basically idiots thought they could afford housing they couldn't took out loans that they couldn't feasibly pay off and greedy banking systems didn't seem to care since they wanted these same idiots to default on their loans. Eventually, this caught up to the economy at large when banks started losing billions of dollars and people got into massive debt.
Even then though. The economy isn't THAT bad. I say we help Haiti. But only because we sort of left them out to dry a few years ago.