I'm not sure of Catholic doctrine. But I don't think they have to ex-communicate them. But they are supposed to withhold communion from public officials who support abortion, as they are doing now with Pelosi.
It’s the title.
How many times have titles been inaccurate?
Pretty high percentage, from what I’ve seen. I did break with tradition and read the article, and it did not say he kicked them out. Additionally, there is a big difference between attendance and membership. You can kick someone off the membership rolls but not prohibit them from attendance.