Information on mortgage loan defaulters involved in the Financial meltdown ?

considering loans used to be - you disn't need to prove income, you didn't need to prove anything or have any money down - who do you think would take advantage of this? EVERYONE lol illegal, legal or citizen or not - anyone that could slip thru the cracks did - so does it really matter "who" took out the loans - not really - it does matter that we let those people get a loan at all to begin with. The Gov hates to admit they screwed up.