What should the government do, or not do, about subprime loan crisis? Should they offer fixed loans thru FHA?

Should they help everyone with a variable rate loan, even those who could have afforded a smaller but decent house at a lower rate, but wanted to manipulate the system to get rich quick? Should they help only those with lower end houses by a limited amount so that we help only those who truely need it? Should they not help anyone and let the economy work it out?