The primary source of waste in government is that legislators are often under heavy pressure to vote for projects that will benefit their campaign contributors, even when those projects fail a simple cost-benefit test. But with the Supreme Court showing little interest in permitting tighter rules on campaign contributions in recent years, there is little reason to be optimistic that we'll start curbing this kind of waste any time soon.

As John Maynard Keynes taught us in the 1930s, in such situations, government is the only entity with both the motive and the ability to boost total spending by enough to put people back to work. As it happens there are long lists of important public projects that cry out to be done.

When people bump up against one another in the course of pursuing their goals, it is in everyone's interest to resolve any resulting problems in the least costly ways possible.

The primary source of waste in government is that legislators are often under heavy pressure to vote for projects that will benefit their campaign contributors, even when those projects fail a simple cost-benefit test. But with the Supreme Court showing little interest in permitting tighter rules on campaign contributions in recent years, there is little reason to be optimistic that we'll start curbing this kind of waste any time soon.

We could curtail private spending by several trillion dollars a year without requiring painful sacrifices from anyone. That would be more than enough to rebuild our crumbling infrastructure and eliminate government indebtedness once and for all.

If the search is for examples that contradict the predictions of standard economic models, a good rule of thumb is to start in France.

Only the federal government has the power to spend beyond its current revenue. It shouldn't do that when the economy is at full employment. But it's an essential step for an economy mired in recession.