(http://www.catholicnewsagency.com/new.php?n=25759)WASHINGTON D.C., September 28 (CNA/EWTN News) .- Pro-life advocates said the University of Notre Dame's recent invitation to President Barack Obama to speak on campus is a chance to participate in public discourse, unlike the school's welcoming of Obama as commencement speaker in 2009.One is a scandal and the other is entirely appropriate, said