The attorneys general of 20 states are asking the U.S. Supreme Court to hear a case involving a suppressed public association of the faithful in Kentucky caught up in a zoning dispute over the construction of a proposed Marian grotto.Our Lady of Lourdes Church in Park Hills, KY. Credit: Youtube.The Missionaries of St. John the Baptist are seeking to build a Marian grotto on the grounds of Our Lady of Lourdes Parish in the Diocese of Covington, K…