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The U.S. economy slowed sharply in the April-June quarter even as consumers stepped up their spending.

The gross domestic product, the economy’s total output of goods and services, grew at a 2.1% annual rate last quarter, down from a 3.1% gain in the first quarter, the Commerce Department estimated Friday.

But consumer spending, which accounts for 70% of economic activity, accelerated to growth at a sizzling 4.3% rate after a lacklustre 1.1% annual gain in the January-March quarter. The resurgent strength in household spending was offset by a widening of the trade deficit and slower business inventory rebuilding. Those two factors combined pared annual GDP last quarter by 1.5 percentage points.

Economists also noted that business capital investment, which has been strong for the past two years, fell at a 0.6% annual rate in the April-June quarter, the first decline in three years. That weakness likely reflects, at least in part, a reluctance by businesses to commit to new projects because of uncertainty surrounding President Donald Trump’s confidence-shaking trade war with China.

Indeed, most analysts think the U.S. economy could slow through the rest of the year, reflecting both global economic weakness and the trade war between the world’s two largest economies.

That is one key reason why the Federal Reserve is widely expected to cut interest rates next week for the first time in more decade and two signal that it may further ease credit in the months ahead.

On Friday, besides issuing its first of three estimates of growth in the April-June quarter, the government reported that the economy grew more slowly in 2018 than it had previously estimated. As part of its annual revisions to GDP, the government downgraded its estimate for 2018 growth from 3% to 2.5%. President Donald Trump had frequently boasted of the 3% growth figure as evidence that his policies have invigorated the economy.

For the January-March quarter, a narrower trade deficit and a surge in business restocking had contributed 1.3 percentage points to the 3.1% annual gain. But economists had cautioned that this strength was likely to be temporary.

For the second half of this year, economists say they think GDP will grow at a modest annual rate of 2% or slightly lower, leading to growth for the full year of around 2.5%. That would be down from 2018 growth of 2.9%, which had been the best showing since a similar rise in 2015.

That would be a disappointment to the Trump administration, which is forecasting that Trump’s economic policies of tax cuts, deregulation and tougher trade enforcement will lift the U.S. economy to sustained gains in coming years of 3% or better. Trump often cites the economy’s performance at his campaign rallies, saying his policies have lifted the economy out of a decade-long slowdown he blames on the wrongheaded policies pursued by the Obama administration.

While economists see the tax cut Trump pushed through Congress in late 2017 as a key factor boosting growth last year, they expect the impact of those cuts will fade this year. Most think it would leave the economy growing close to the annual average of 2.3% that has prevailed since this expansion began in June 2009.

The recovery this month became the longest in U.S. history, one month longer than the 10-year expansion of the 1990s.

The 2.3% average annual growth rate is the weakest for any recovery in the post-World War II period, a fact that Trump repeatedly noted during his 2016 campaign, blaming that weakness on failed policies of Barack Obama.

Private economists, however, argue that the slowdown reflected the severity of the 2007-2009 recession, the worst since the Great Depression of the 1930s as well as long-term trends such as the retirements of the baby boomers and slowing productivity.

Mark Zandi, chief economist at Moody’s Analytics, says he is looking for annual GDP growth this year of 2.5%, down from 2.9% last year, slowing even further to 1.7% in 2020.

“The benefits of the 2017 tax cuts are largely played out,” Zandi says. “I think going forward that recession risks are high especially if something major goes off the rails such as a resurgence of the trade war or a bad exit by Britain from the European Union.”