The Cuomos and Biden, and any other so-called “catholic” who promotes abortion certainly is not Christian nor Catholic.
If you are a Catholic then that judgment - as an official one - is to be left up to your church, starting with your local ordinary and can go all the way to the pope. And is it very clear that Rome manifestly considers proabortion, prosodomy public figures (Ted Kennedy Catholics) as members in life and in death, thus making them brethren with the rest.
When leadership is made the supreme authority rather than than unchanging Scripture then when leadership goes South then so do the flock that follows them, while dissident TradCaths essentially become like fundamental evangelicals in that they determine the validity of church teaching based upon their judgment of what past church teaching says and means.
But for us it is Scripture, while besides liberal theology,distinctive Catholic teachings are not manifest in the only wholly inspired substantive authoritative record of what the NT church believed (which is Scripture, in particular Acts through Revelation, which best shows how the NT church understood the gospels).