CathInfo.com

But rest assured, Fr. Waters is no longer just a "Novus Ordo" priest.  Because of the unjust action of Bishop Chaput that cast public doubt upon the validity of Fr. Waters ordination, Fr. Waters was ordained conditionally in 2014 according to the "received and approved rites customarily used in the solemn administration of the sacraments", as dogmatized from the Council of Trent, by Bishop Richard Williamson who was likewise ordained a priest and consecrated a bishop in the "received and approved rites" of the Catholic Church by Archbishop Marcel Lefebvre. It is the use of the "received and approved rites" whereby a minister establishes that his intent is to "do what the Church does" which is necessary for sacramental validity.  Fr. Samuel Waters’ orders are most certainly valid unlike every other Novus Ordo priest where the ordaining intention of the minister now must always be examined and sometimes viewed with grave suspicion. 

If they accept prevost as pope they either deny EENS or deny indefectibility and infallibility