The higher anti-dumping duties are now in effect, and the new countervailing rate will become effective when the announcement is made in the Federal Register, which is expected to occur next week. Although NAHB is disappointed by this decision to raise lumber tariffs, it is part of the regularly scheduled review process the US employs. …Even more troubling, tariffs on Canadian lumber could go much higher [via] a separate investigation under Section 232 of the Trade Expansion Act, which is examining whether lumber imports represent a threat to national security. The Commerce Department is expected to announce the results before the end of this month. If the Trump administration finds that lumber imports pose a threat to national security and elects to impose lumber tariffs, the new tariff would be tacked on to the existing 35% tariff. …NAHB has been leading the fight against lumber tariffs because of their detrimental effect on housing affordability.