For Democrats, the reason is pretty simple: Partisans are loath to cheer economic growth for fear of implicitly praising the president. There is far more political advantage in focusing on the (very real!) persistent dark spots of the economy, whether it’s high medical and child-care costs, the burdens of student debt, racial and gender disparities, or the socioeconomic indignity of low-wage and no-wage service-sector work.
For the GOP, the situation is slightly more complicated. Both the White House and congressional Republicans claim full credit for the economy all the time—a dubious argument, which elides the role Barack Obama’s administration played in setting the economy on its trajectory. Yet Republicans don’t like to admit the biggest policy-based reason why the economy surged in 2018 and into 2019, which is this: President Donald Trump secured the very stimulus that Republicans spent years denying President Obama.
Throughout his term, Obama tried repeatedly to get Republicans to sign on to additional spending and tax cuts for the middle and lower classes, which would have increased the deficit. The GOP repeatedly refused to go along with this, arguing that higher deficits were philosophically unacceptable and financially ruinous. In 2016, with the economy slowing down, the Obama administration again proposed a moderate stimulus plan that would have targeted infrastructure, but congressional Republicans refused to budge.
But under Trump, something odd has happened: The GOP has presided over the largest two-year deficit increase in American history, outside of a recession. The party has paired higher spending with a massive corporate tax cut, which sweetened a long-term marginal-rate cut on corporate income with a short-term tax benefit for households.
Thanks to this infusion of deficit-financed stimulus, job growth and GDP accelerated throughout 2018, and both continue to grow steadily today, despite the wobbliness of global markets and the president’s imbecilic decision to wage a trade war against the world’s second-biggest economy.
The upshot is that neither side has much to gain from speaking frankly about the economy: Partisan Democrats are unlikely to praise its accomplishments, lest they undercut their 2020 nominee; and conservative Republicans are unlikely to explain its basis, lest they sound like hypocrites—or, even worse, closet Keynesians. They’ll talk about the tax cut while ignoring the indisputable fact that they jump-started the economy with the very stimulus tools they decried as unacceptable under Obama—even as millions of families struggled with unemployment.
Fiscal policy—that is, how a government taxes and spends—is crucially important to the lives of typical workers. It helps determine how many people can get work, what they’re paid, and what they can afford with their income. Nearly 100 years ago, John Maynard Keynes argued that fighting through a demand-constrained economy with deficit-financed stimulus is necessary and prudent. The Trump tax cut helped the economy in precisely this way: Government spending went up, federal tax rates went down, deficits rose, households spent the cash, and growth accelerated.