"Certainly, he is not a Catholic in good standing, and he should not approach to receive Holy Communion..."I don't intend to get involved in the recommending any candidate for office, but simply to state that a Catholic may not support abortion in any shape or form, because it is one of the most grievous sins against human life, and has always been considered to be intrinsically evil. And therefore to support the act is a mortal sin.
I don't know why Catholics who are involved in politics can't get this straight in their heads."
Cardinal Raymond Burke
https://www.newsweek.com/catholic-cardinal-says-pro-choice-joe-biden-shouldnt-receive-communion-1534898?fbclid=IwAR3wxxL8_070DPHyPtp6DtbDST2rWCbLBIk8pps_kX58lAGbIDdE1y7vLb4