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January 3, 2019 4:15 PM, EST

White House Says Shutdown Trims 0.1% From GDP Every Two Weeks

US Capitol US Capitol building (Andrew Harrer/Bloomberg News)

The ongoing partial government shutdown will cut U.S. economic output by about 0.1% every two weeks, the chairman of the White House Council of Economic Advisers said.

“Our estimate is that GDP in the first quarter could go down by about a tenth if this were to resolve in the next few weeks,” CEA Chairman Kevin Hassett told reporters at the White House on Jan. 3.

While it wasn’t immediately clear whether Hassett was referring to the level of GDP or the annualized pace of growth, his estimate appears to be broadly in line with those from private forecasters.

Earlier this week, Macroeconomic Advisers by IHS Markit lowered its forecasts for fourth-quarter and first-quarter growth each by 0.1 percentage point on the assumption the shutdown will last for three weeks. JPMorgan Chase & Co. analysts estimated that each week of the shutdown will reduce GDP growth by about 0.1 to 0.2 percentage point, and the drag should mostly reverse once the government fully reopens.

Hassett said that if the shutdown persists, the pace of economic growth would continue to decline. “I would guess it’s going to be something like, a rule of thumb would be every two weeks is a tenth,” he said.

The economic impact will be tempered since furloughed government workers are typically awarded back pay once a budget impasse is resolved, he said, though some economic output is lost because they aren’t working during the period.

“I don’t really expect to see big economic effects of this, again, assuming that it ends relatively quickly,” Hassett said.

Portions of the federal government shut down on Dec. 22 after President Donald Trump refused to sign spending legislation without $5 billion to continue construction of a wall on the U.S. southern border. Congressional Democrats rejected the demand, and took control of the House of Representatives on Jan. 3.

Trump adviser Kellyanne Conway said Jan. 3 the president isn’t backing down on his demand to fund a wall-like barrier along the border.

“He says you can call it whatever you want, in other words we need border security,” Conway said. “It may include a wall, it may be steel slats.”