The only occasion that pro-abortion politicians were ex-communicated was by Archbishop John Francis Donoghue.
He is now Archbishop Emeritus John Francis Donoghue, and his successor to the Archdiocese of Atlanta (an African-American bishop) did away with this.
This did sadden (or anger) some priests of the Archdiocese of Atlanta, but nothing they can -- he is their boss.
He died in 2011. Our parish choir sang at his wake.
Prayers for the repose of his soul.