WTO battle being fought all over again

It looks to me that Prof. Merlin Magallona`s reasons for claiming that the Japan-Philippine Economic Partnership Agreement (JPEPA) is unconstitutional are strikingly similar (enough to give a sense of deja vu) to those he offered when he questioned the constitutionality of the WTO agreement before the Supreme Court, over 10 years ago. The Supreme Court gave them short shrift, but it seems the WTO battle is being fought all over again.