If there be any justice in Canon law I hope it reveals itself now.
"Headway in Rome" usually translates realistically to somthing like 5-10 years. By the time these are resolved it's likely that none of the "defendants" will be in office any longer. It's not as if their Catholic affiliation has ever had any significant impact on the number of votes they have received.
On the other hand, if the matter is adjudicated, does anyone honestly think that the Kerrys and the Kennedys are actually going to change their political positions or behavior, merely because thy will no longer have the name "Catholic" appended to their resumes? In the real world of American politics, pragmatism will always trump faith.
This will be a hollow victory at best in terms of the purported objective. It's not as if the Catholic Church in America has a stronghold on the moral high-ground, given the rampant clericalism which now characterizes its presence.
I foresee the mountain roaring and bringing forth a massive yawn amongst the populace. But it should succeed in becoming a "talking point" for about 16-20 hours.