It's H.J. Res, 111th Cong., 1st Sess., introduced by Rep. José Serrano on Jan. 6, 2009. The resolution proposes "an amendment to the Constitution of the United States to repeal the twenty-second article of amendment, thereby removing the limitation on the number of terms an individual may serve as President." I don't have much to say on the merits, but I'm curious about the backstory: Why is Rep. Serrano proposing this? He had apparently done the same in 2005.
Thanks to Jeff Settle for the pointer.