Donald Trump this month announced plans to rescind a landmark rule that has protected old-growth forests in the US for 25 years. If finalized, the rollback is expected to benefit the companies that Tom Schultz, chief of the US Forest Service, represented in his previous roles as a timber industry lobbyist and executive, according to research by consumer advocacy nonprofit Public Citizen.

The Roadless Area Conservation Rule, more commonly known as the “roadless rule,” was adopted in 2001 to limit development in roughly 45 million acres of national forest. Industry interests and Republican representatives have long lobbied for the rule’s rescission, which would open up those swaths of untouched land to road construction, drilling and logging.

In a statement, Schultz described the move as “the best way to restore the balance, reduce wildfire risk, and secure the long-term health of our forests and neighboring communities.” But studies suggest it could put 400 threatened and endangered species at risk and imperil ecosystems.