Many US bishops are Liberal, partisan and they influence their congregations to be the same. The test is their compliance with Canon Law.

Every state has a government and some with Catholic politicians. If the pol supports abortion, then the bishop must excommunicate as required by Canon Law. If he doesn't then he is remiss and negligent. The congregation must report this partisanship to Rome & request a replacement. The same goes specially at the Federal level in Washington, D.C.