President Trump, you surely could not have wanted your partial government shutdown, your tariffs, your corporate tax cuts and your war on undocumented immigrants to hobble economic growth and to hurt farmers, factory workers, airline passengers, government contractors, retailers, Coast Guard members and F.B.I. agents. But the economy can take only so many bad policies.

A $19.4 trillion economy is losing momentum as fast as your approval ratings. Growth is slowing down in spite of a $1.5 trillion tax cut that is blowing up the deficit while help ing companies like Goldman Sachs, which earned $2.5 billion in the fourth quarter, thanks in part to a $467 million tax benefit.

Government workers have already missed an average of $5,000 in pay because of the shutdown. These unpaid federal employees may represent only 0.53 percent of all payrolls, according to the economist Ian Shepherdson, but because these employees have above-average earnings, the harm to the economy is greater than that proportion might suggest. Presumably, they’ll get back those wages at some point. Even then, some of those earnings will have to go to pay late fees on credit card and mortgage bills that are piling up. None of that money, though, will compensate for restaurant meals not eaten; movies not seen; Frappuccinos not sipped ; or supermarket runs not made, at least not by Coast Guard members who are heading to food banks instead. Those sales, and sales taxes, are lost forever.

The shutdown is also aggravating damage you’ve already caused. You must have thought your audience was just a bunch of hayseeds when you told the American Farm Bureau Federation this week that “we’re setting records together for farmers and for agriculture.” Farmers are losing sales to China, Mexico, Canada and elsewhere because of your trade policy. They’ve lost customers who may never return. And now, because of the shutdown, they can’t get services ranging from crop financing to vital information about commodity supplies from the Department of Agriculture. Farmers have crucial decisions to make before the spring planting season begins, and the shutdown is keeping them in the dark. And in the red.