[New York Times] Congress must resist its natural inclination to spend whatever it has on hand (and more). And new budget rules are the only sure-fire way to provide such restraint. After all, the legal restrictions on spending that Congress first enacted in 1990 are, in no small part, responsible for today's surpluses. Caps limited the amount that could be spent annually on discretionary programs like defense, medical research, law enforcement and community development. And pay-as-you-go rules forced lawmakers to offset any expansion in entitlement programs or tax relief with savings from the same areas of the budget.