Monday, acting on its own initiative, the U.S. Court of Appeals for the D.C. Circuit announced that it would hear challenges to the Obama administration’s Clean Power Plan sitting en banc. As per the court’s order, the challenges will be heard by the full court in September. A three-judge panel had been scheduled to hear arguments June 2.

The court’s decision appears to be sua sponte (on the court’s own initiative), as there is no record of any party to the case asking the court to hear the case en banc in the first instance. This has been done before, as with U.S. v. Microsoft in 2001. In that case, the court’s decision to go en banc could be explained by the fact that only seven judges could participate in the case, which could have made it difficult for the court to rehear the case en banc after a three-judge opinion. It’s possible that similar considerations were at play here, but the numbers don’t quite add up. Two D.C. Circuit judges (Supreme Court nominee Merrick Garland and Cornelia Pillard) did not participate in the decision to go en banc, but that still leaves nine judges — with plenty to vote for an en banc review of a wayward three-judge panel ruling.

Read the full story. (Washington Post)