Over the last couple of weeks, I've been traveling around the country and talking with folks about my blueprint for an economy built to last. It's a blueprint that focuses on restoring the things we've always done best: our strengths, American manufacturing, American energy, the skills and education of American workers. And most importantly, American values like fairness and responsibility. We know what happened when we strayed from those values over the past decade, especially when it comes to our housing market. Lenders sold loans to families who couldn't afford them. Banks packaged those mortgages up and traded them for phony profits. It drove up prices and created an unsustainable bubble that burst, and left millions of families who did everything right in a world of hurt. It was wrong. The housing crisis has been the single biggest drag on our recovery from the recession.