The New York Times reports

President Biden, vowing to restore environmental protections frayed over the past four years, has ordered the review of more than 100 rules and regulations on air, water, public lands, endangered species and climate change that were weakened or rolled back by his predecessor.

But legal experts warn that it could take two to three years — and in some cases, most of Mr. Biden’s term — to put many of the old rules back in place.

Read more at  Restoring Environmental Rules Rolled Back by Trump Could Take Years – The New York Times