Catherine Rampell: Happy 10th birthday to the economic expansion. Don’t count on an 11th.

Trader John Doyle works on the floor of the New York Stock Exchange, Thursday, May 30, 2019. Stocks are edging higher in early trading on Wall Street following two days of losses. (AP Photo/Richard Drew)

Washington - Happy 10th birthday, U.S. economic expansion! Let’s hope you’ll be allowed to live a little while longer, despite a certain someone’s concerted efforts to kill you off.

The Great Recession officially ended — and the current recovery officially began — exactly a decade ago, in June 2009. That means we’ve now tied the record for the longest economic expansion on record, matching the 10-year business cycle upswing that ended in March 2001.

That’s quite an achievement, especially in light of the many policy missteps we’ve been subject to in the intervening years, including government shutdowns, trade wars and threats to central-bank independence. It speaks to the hardiness of the U.S. economy.

So while statistically speaking, we might be overdue for a downturn, the economic fundamentals appear pretty good. And recoveries don't merely die of old age; they get murdered. A negative shock does them in, or a collective crisis in confidence.

Unfortunately, though, the temporary stimulus of the Republican tax cuts appears to be fading. And, meanwhile, a number of "softer" indicators suggest that the risks of a near-term slowdown, or even recession, are rising.

On Monday, for instance, two indexes measuring economic activity in the manufacturing sector were released. One, the Institute of Supply Management's manufacturing index, dipped to its lowest level since 2016. Another, IHS Markit's U.S. Manufacturing Purchasing Managers' Index, reached its lowest level in nearly a decade.

Note that both manufacturing checkups were based on surveys conducted before Trump announced his mind-numbingly idiotic tariffs on Mexican goods, which will cause even more trouble for U.S. manufacturers who rely on the unfettered flow of trade across our southern border.

The auto industry, which has already announced more layoffs in the first four months of this year than in any comparable period since 2009, is especially vulnerable, given how much of the sector's supply chain straddles the U.S.-Mexico border. Economists at Deutsche Bank estimated that if the president indeed ratchets tariffs on all Mexican goods all the way up to 25 percent, as he has threatened, the price of vehicles sold in the United States would rise by an average of about $1,300.

And that's not even counting the effects of Trump's separate, auto-specific tariffs.

The administration has suggested these may soon be imposed upon both cars and car parts imported from around the world, as part of its attempt to gain leverage in trade negotiations with Japan and the European Union. According to an analysis by the Center for Automotive Research, depending on how narrowly tailored such duties might be, these taxes could raise U.S. car prices by anywhere from a few hundred dollars to several thousand dollars.

This looming tariff threat adds yet another layer of policy uncertainty to an economy already rife with plenty of it. So do the waning chances for ratification of Trump's trade deal intended to replace the North American Free Trade Agreement.

These are hardly the only dispiriting economic developments of late.

There's also the Treasury yield curve, which shows interest rates for bonds at different maturity dates. Usually longer-term bonds have higher yields than shorter-term ones. But, for months now, that hasn't been the case: the yield curve has at least partially "inverted." Historically, this inversion has preceded downturns. It signals that traders believe the economy is weak enough that the Fed will need to cut interest rates soon.

Likewise, the National Association for Business Economics' most recent survey, released on Monday, also found that private sector economists put the odds of a recession starting by the end of 2020 at 60%. That's nearly double the 35% odds respondents gave when surveyed in March. Like the latest manufacturing data, this survey was also conducted before Trump announced his Mexico tariffs, which suggests it actually may be understating economists' present levels of pessimism.

In fact, in the days since Trump's Mexico tariff announcement, a number of Wall Street economists have sent out client notes saying that the chances of an interest-rate cut are now rising. Based on Fed funds futures, the market appears to be pricing in an 85% chance of a September rate cut.

Under normal circumstances, the idea that the Federal Reserve would contemplate cutting rates so soon after unemployment touched a half-century low would seem shocking. But hey, Trump has been arguing for a while that the Fed should cut rates; he's now ginning up enough fear about the future of the U.S. economy that he could get his wish.

Catherine Rampell

Catherine Rampell’s email address is crampell@washpost.com. Follow her on Twitter, @crampell.

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