Recently, the President re-nominated Sharon Block and Richard Griffin, both Democrats, to be Members of the National Labor Relations Board.  Last month, the U.S. Court of Appeals for the D.C. Circuit ruled in Noel Canning v. NLRB that their recess appointments to the NLRB made in early January 2012, were not valid.  The five-member board is chaired by Mark Pearce, whose term will expire August 27, 2013. The two Republican seats are currently vacant.  A number of Republican Senators have called upon Block and Griffin to resign in light of the D.C. Circuit decision.