Still Waiting for the Tax-Cut Boost

How much government stimulus is needed to ramp up economic growth?

The U.S. economy slowed down in the first quarter. That isn’t a surprise, but considering the stimulus hitting the economy it counts as disappointment.

Economists had thought that 2018 was off to a solid start. In early February, forecasters polled by Macroeconomic Advisers expected gross domestic product would grow at a 2.7% annual rate in the first quarter. But a series of disappointing reports on consumer spending pushed estimates lower. Economists in the Macroeconomic Advisers poll now estimate Friday’s first-quarter GDP...