WASHINGTON — The U.S. International Trade Commission on Wednesday overturned a Trump administration decision to impose tariffs on Canadian newsprint, saying U.S. paper producers are not harmed by newsprint imports.

The unanimous decision eliminates tariffs that have been in effect since January, handing a win to small and medium-size newspapers, which have struggled to absorb the cost of higher newsprint and made cuts, including layoffs, as a result.

The Commerce Department imposed tariffs as high as 20 percent on newsprint from Canada after North Pacific Paper Co., a paper mill in Washington state, filed a complaint alleging that subsidies the Canadian government provides to its manufacturers put American paper companies at a disadvantage.

The commission said in a statement that it “determined that a U.S. industry is not materially injured or threatened with material injury by reason of imports of uncoated groundwood paper from Canada.”

The decision will allow Canadian paper providers to stop paying tariffs that had already caused widespread damage in the struggling newspaper industry.

Dozens of regional newspapers across the country have cut staff, reduced the numbers of days they printed and, in some cases, closed entirely, unable to contend with the increased costs.