Most people learn by the age of 10 or so that making promises is easier than keeping them. That's why really big promises like corporate pensions and national retirement/health care programs are so easy to screw up. Offering someone a cushy retirement or a lifetime of healthcare feels great and generates massive goodwill from the recipient. So elected officials and corporate executives tend to over-promise in the moment and leave the hard part -- actually making good on those promises -- for their successors.

Today, of course, we're deeply into the hard part. Old-line US companies are hobbled by "legacy costs" of paying for the retirement of yesterday's workers while state and local governments, after years of failing to put aside enough to cover the retirement of their teachers and cops, are being bankrupted by the burden. And now comes this:

This Road Work Made Possible by Underfunding Pensions

The Federal Highway Trust Fund is expected to run out of money in August. So, naturally, Congress is debating a temporary fix that involves letting corporations underfund their pension systems.

Of course, we could replenish the fund by raising the federal gasoline tax, which is its primary source of financing. That's what Senator Bob Corker, Republican of Tennessee, and Senator Christopher S. Murphy, Democrat of Connecticut, want to do. But increasing gas taxes is unpopular, so Congress hasn't done so since 1993, which means that the tax on gas has actually fallen 39 percent over the last 21 years after you adjust for inflation. Instead, Congress has used a series of gimmicks and shifts to keep the fund solvent as highway construction costs have risen.

The latest proposal, which passed the Republican-controlled House Ways and Means Committee on Thursday, works like this: If you change corporate pension funding rules to let companies set aside less money today to pay for future benefits, they will report higher taxable profits. And if they have higher taxable profits, they will pay more in taxes over the 10-year budget window that Congress uses to write laws. Those added taxes can be diverted to the Federal Highway Trust Fund.

Unfortunately, this gimmick will also result in corporations paying less in taxes in later years, when they have to make up for the pension payments they're missing now. But if it happens more than 10 years in the future, it doesn't count in Congress's method for calculating budget balance. "Fiscal responsibility," as popularly defined in Washington, ignores anything that happens after 2024.

Letting companies underfund pensions so they pay more taxes is a dumb idea, but it's not a new one: A similar strategy was part of the last bipartisan highway bill, which passed in 2012. The new proposal would simply extend the underfunding that was already allowed in the 2012 bill for a greater number of years.

This idea has come up in the last few years because pension costs are heavily driven by interest rates -- and lower rates mean higher costs. When rates are low, as they are now, the government tells companies to set aside more money to pay for future pension benefits because they can't count on high returns on safe investments to cover pension costs. Some companies have complained that "artificially low" interest rates are forcing them to actually overfund their plans. The 2012 highway bill and the new proposal give companies relief on that front, letting them fund their pensions based mostly on a historical 25-year average of interest rates; essentially, they're being allowed to calculate the cost of promising pension benefits on the basis of investments -- safe, high-yielding bonds -- that were once available to pension funds but can't be found today.

This is wishful math. Low long-term interest rates are not artificial; they reflect an expectation that the Federal Reserve will keep rates unusually low for a long time, and that economic growth will be relatively weak and uncertain. That, in turn, means that returns on safe investments like bonds will continue to be below historical averages, and that corporate pension funds still won't get the safe, high returns they used to enjoy. If companies are allowed to put less money into their pension funds in that environment, the funds will deplete over time, and the companies will just have to pay more later -- unless they go bankrupt, in which case a federal agency (the Pension Benefit Guaranty Corporation) will be on the hook to pay retirees.

Some thoughts

This is emblematic of so much of today's world. If the reality we've created through our past choices is uncomfortable, just redefine the terms of the debate to make formerly bad things look good. If we borrow too much, lower the value of the currency in which those debts were contracted. If the resulting inflation numbers are problematic, change the definition of inflation to hide the increase. If jobs are harder to get because of rising debt and inflation, simply conflate part-time jobs (which are rising) with full-time jobs (which are evaporating) and say "employment" is growing strongly. In this context, redefining "fully-funded" pensions downward makes complete sense, right?

That it's a bad long-term strategy should be obvious to pretty much any objective observer. But by the logic of Keynesian economics, maybe not: If people think everything is okay, then maybe they'll behave in ways that actually make that hope a reality. At worst, they'll borrow and spend for another year or two, which might be enough for today's CEOs, congresspeople and Fed officials to retire with their reputations (and fully-funded pensions) intact, leaving tomorrow's plan administrators and recipients to dicker over a shrunken pie.

By the way, if corporate profits are artificially inflated by lower pension funding requirements, then the stock market might be artificially inflated by those higher earnings. From a modern perspective, this is a highly-efficient piece of "macro-prudential" policy, killing two perceptual birds with one stone. Fooling us twice, in other words.

And a final philosophical note: Why is the federal government involved in road building in the first place? Washington's money comes from the states, which means we tax New York investment bankers to pay for California highways, and tax California entrepreneurs to pay for New York mass transit. Why not just leave the money with the locals to manage their roads as they see fit, and fire the bureaucrats who currently shuffle the checks back and forth? The statist answer is that if Washington doesn't do it, it won't get done. To which most libertarians would respond, if something needs doing the states can do it just as easily -- and more cheaply -- than the feds.