And so, from 1970 to 2000, a broad coalition of conservatives (who wanted to see the government stop encouraging immorality), centrists (who wanted government money spent effectively), and leftists (who wanted poverty alleviated) removed the “notches” from the social-insurance system. Presidents Jimmy Carter, Ronald Reagan, George H. W. Bush, Bill Clinton, and even George W. Bush and their supporters created the current system, in which tax rates and eligibility thresholds are not punitive disincentives to enterprise.