The US imports about 40% of the softwood lumber the nation uses each year, more than 80% of that from Canada. President Trump says that the US has the capacity to meet 95% of softwood lumber demand and directed federal officials to update policies and regulatory guidelines to expand domestic timber harvesting and curb the arrival of foreign lumber. …As researchers studying the forestry sector and international trade, we recognize that the US has ample forest resources. But replacing imports with domestic lumber isn’t as simple as it sounds. There are differences in tree species and quality, and U.S. lumber often comes at a higher cost, even with tariffs on imports. Challenges like limited labor and manufacturing capacity require long-term investments, which temporary tariffs and uncertain trade policies often fail to encourage. In addition, the amount of lumber imported tends to mirror the boom-and-bust cycles of housing construction, a dynamic that tariffs alone are unlikely to change.