> If the EPA can legally grant states the ability to set their own emissions, why can't it revoke it or roll it back? The government isn't allowed to change po

> If the EPA can legally grant states the ability to set their own emissions, why can't it revoke it or roll it back? The government isn't allowed to change policies they've already created unless there is a compelling reason to. Otherwise every government policy would completely change every two years after each election.