Remember Rev. /US Representative Robert Drinan, SJ?  He was forced to choose between renouncing his position on abortion - it's a matter for those most intimately affected, not legislation - and his vocation to priestly life in the Society of Jesus.  He of course chose the latter, and stepped away from government - a tragedy for all of us who worked against the war in Indochina and for broader application of civil rights, funding for embattled and impoverished cities, and other 'progressive' - i.e. Jesus-mandated - causes.   Exclusion of moderate points of view does no one any good.