Dr. Taylor Marshall in his book "Infiltration" made up a pseudo problem
against investigating the validity of the Francis conclave despite the
fact that Cardinal Raymond Burke told Patrick Coffin there are
"grounds... for calling into question the [Francis] election."
(Patrick Coffin show, Dubia Cardinal Goes on Record - Raymond Cardinal Burke," 19:55 to 21:46)
In page 239 of his book he presents his non-problem by saying if Francis's election was invalid then "those Francis cardinals are invalid cardinals. A [future] conclave including invalid cardinals would itself be invalid."
Which leads to the question:
Why doesn't Marshall know about Antipope Anacletus II and his pseudocardinals?
Briefly, here is a little background on the antipope. St. Bernard of Clairvaux investigated the validity of the Anacletus conclave and found his pontificate was not valid because he had violated the conclave constitution.
It so happened that Anacletus made eight "cardinals" who are in the Catholic history books called pseudocardinals which according to Marshall's reasoning meant the next conclave in the time of Bernard would be invalid.
The non-problem would be solved the same way today as it was solved in the time of St. Bernard:
The pseudocardinals are not allowed to vote in the next real conclave
Pray an Our Father and the St. Michael the Archangel prayer now for
Jesus Christ by His Precious Blood to send the saintly cardinal or bishop the
grace to overcome any satanic attempted blockage of his coming forward
to call the imperfect council to judge the papacy of Francis.