Harley Davidson’s U.S. sales slid after it decided to shift production overseas to avoid fallout from the White House’s wide-ranging tariffs, prompting President Trump to back a boycott of its motorcycles.

The 13 percent drop in the American market, by far the largest decline, was countered by growth in Europe and Latin America in the three months through September as Harley manages through “a challenging time in our history,” Chief Executive Officer Matt Levatich said Tuesday. “Increased ridership” is key to rebuilding the U.S. market, he explained on an earnings call. “We know we must lead the industry with bold action to change our trajectory.”