<p>During the Reagan years, conservatives were willing to live with big spending. What's changed?</p>
<p>Unlike most families, the federal government can perpetually spend more than it takes in and still remain fiscally sound. That's because unlike us mortals, Uncle Sam isn't going to retire. His income isn't going to top off in middle age and slip in his golden years. The occasional but short-lived downturn notwithstanding, it will continue to grow with the economy, forever.</p>