A California court rejected a challenge to the emissions offset component of California's greenhouse gas (GHG) cap-and-trade program promulgated by the California Air Resources Board (CARB) under the Global Warming Solutions Act of 2006. Under the program, all offsets must be additional, meaning tha...

The D.C. Circuit dismissed a road building association's lawsuit challenging EPA regulations for nonroad engines and vehicles. The regulations pertain to CAA §209(e), which preempts certain state regulation of nonroad engines. The association petitioned EPA to amend those regulations to broaden the...