A Bishop has authority only over what takes place in his own diocese. Bishops are answerable to the Pope, not to one another. The cowardice that you are seeing exhibited today by some Bishops who allow the mockery of the Eucharist by the Pelosi's, Kerry's and Biden's of the world serves to reaffirm what St. Athanasius wrote so many centuries ago:
"The floor of hell is paved with the skulls of bishops."
“Bishops are answerable to the Pope, not to one another.”
So this leads me to believe that the Pope and the Vatican is taking a “hands off” position on whether refusing communion to pro-choice politicians should be enforced or not.