The goals of the welfare state seem laudable: to help the poor, to protect against severe economic hardship and to ensure access to essential health care. But good intentions don’t always make for good policy. There is an intense debate about how large the welfare state should be, a debate that partly reflects differences in philosophy but also reflects concern about the possibly counterproductive effects on incentives of welfare state programs. Disputes about the size of the welfare state are also one of the defining issues of modern American politics.