When the U.S. Supreme Court hears arguments Wednesday in a case about how much possessors of child pornography must pay their victims, two Willamette University law professors and four law students will be in the chambers. Although none of them will speak, they already will have had their say. They have filed a friend-of-the-court brief summarizing the arguments by the Netherlands national agency that monitors child sexual abuse and human trafficking. It is one of 13 such briefs filed in the case, other than those by the parties themselves.