The U.S. Commerce Department set a final dumping rate of up to 16.88 percent and final anti-subsidy duties of up to 9.81 percent, it said in a statement.

Canadian Foreign Minister Chrystia Freeland said Ottawa was disappointed by the final duties. They could still be rejected by the U.S. International Trade Commission, an independent body scheduled to rule in the case on Sept. 17.

"The tariffs would be particularly hurtful for smaller communities, resulting in higher costs and even job losses at local newspapers and publications," Freeland said in a statement.

Tensions between the two neighbors are rising over the imposition of U.S. duties. Since U.S. President Donald Trump took office last year, Washington has acted against Canadian exports of newsprint, softwood lumber and steel and aluminum.

Some Canadian producers, including White Birch Paper, were exempted from duties. The highest anti-dumping rate of 16.88 percent was applied to Catalyst Paper Corp, while Resolute Forest Products Inc was hit with the highest 9.81 percent anti-subsidy duties.

The orders cover about $1.21 billion in 2017 imports of uncoated groundwood paper from Canada, which is typically used for book publishing and printer paper, as well as newsprint.

The decision comes as the United States, Canada and Mexico are trying to relaunch talks to update the North American Free Trade Agreement after Mexico elected a new president in July.

The United States has demanded changes to NAFTA that allow it to more freely pursue anti-dumping and anti-subsidy cases against its northern and southern neighbors, such as those on groundwood paper and softwood lumber.

U.S. Commerce Secretary Wilbur Ross said the case was complicated but that the remedy targeted what he called bad actors.

"Today's decisions are the culmination of an open and transparent process, which ensured a full and fair assessment of the specific facts of this case," he said in a statement.

Under current NAFTA rules, Canada can turn to an arbitration panel to seek a ruling against such duties.

(Reporting by David Lawder; Additional reporting by Susan Heavey in Washington and David Ljunggren in Ottawa; Editing by Bill Berkrot and Peter Cooney)

By David Lawder