Bush signed the law, but it was carried out by the Obama admin, most specifically Obama-appointed Treasury secretary Timothy Geithner. Despite around four million people being originally estimated as eligible for the program, under Geithner’s administration the program helped less than a million of them, and a third of those it helped ended up re-defaulting on their mortgages anyway because they weren’t helped enough. Geithner was quoted as saying that he viewed the goal of the program not as keeping people in their homes, but as slowing down the foreclosures so that they didn’t overwhelm the banks.