That is why I believe the Catholic position to be semi-pelagianism.
From
The Catholic Encyclopedia -
Quick Questions
newadvent.org/library/almanac_thisrock93.htm
What is semi-Pelagianism? Recently a Protestant apologist said that the Catholic position on grace is a textbook case of semi-Pelagianism. And is there something called just plain Pelagianism?
…Semi-Pelagianism was a theological movement common in France in the fifth and early sixth centuries. It was an attempted compromise between Augustine’s teachings on grace and those of the heretical monk Pelagius.
Pelagius said the human will freely commits good or evil and that grace is needed only to help the will do what it already can do on its own. He said that we do not inherit original sin, physical death, or spiritual death from Adam. We learn to sin only by following the bad example of our parents and others.
Finally, Pelagius said that Christ does not bring us new life; he merely helps us by the good example he set for us on the cross, and by following his example we gain grace and are saved.
Semi-Pelagianism was nowhere near this extreme, but it still denied important points of the faith. Its basic claims were:
(1) the beginning of faith (though not faith itself or its increase) could be accomplished by the human will alone,
unaided by grace;
(2) in a loose sense, the sanctifying grace man receives from God can be merited by natural human effort,
unaided by actual grace;
(3) once a man has been justified, he
does not need additional grace from God in order to persevere until the end of life.
All of these propositions, together with those of full-blown Pelagianism, were condemned in 529 at the second Council of Orange (can. 5, 10, and 18) and again in 1546 by the Council of Trent (Decree on Justification, chs. 5, 6, 8, and 13). It is thus impossible to say that Catholic views on grace and free will are semi-Pelagian, for the Church explicitly condemns the errors of the semi-Pelagians.
(jmt) The Catholic Faith affirms the teaching of our Lord that apart from Him we can do nothing (Jn 15:5). It is grace by which we are moved to have faith, it is grace by which we are moved to accomplish the works God has prepared for us to accomplish (Ephesians 2:10 and Phillipians 2:13) and it is the grace of final perseverance which alone will keep the Elect faithful unto death.
Keep the Faith
jmt