The Roman Catholic Diocese of Green Bay said Wednesday partisan politics played no role in its decision to call for two Fox Valley interfaith groups to sever their ties from their state organization. Bishop David Rikken sent a letter Saturday to ESTHER of the Fox Valley and JOSHUA of Green Bay asking them to make the move and calling a meeting with Catholic members of the two groups in March. In the letter, Ricken says ESTHER and JOSHUA’s affiliation with WISDOM, the state umbrella organization of interfaith groups, is problematic because WISDOM is affiliated with the Gamaliel Foundation, a national group whose strategies run counter to Catholic teachings. “The end does not justify the means,” the Very Rev. John Doerfler, the diocese’s vicar general and chancellor, told The Post-Crescent on Wednesday.