The USCCB has been an appendage of the Democrat party since its creation in the ‘teens, as the National Catholic Warfare Conference. Its purpose was to support the draft—in defiance of Pope Benedict XV—and Wilson’s entry into the war. The dominant groups in the Catholic Church at the time were the Irish and the Germans, neither of whom was enthusiastic about getting into the war on the side of the British!
The abortionists got their greatest rhetorical gift from the NCCB’s president, Joseph Cardinal Bernardin, with his “seamless garment,” the doctrine that pro-abortion politicians will govern with justice, wisdom, and compassion, and that pro-life politicians want to kill the poor and blow up the world.
The parking lot at the USCCB was festooned with KERRY bumper stickers in 2004. When a Catholic lady published photographs of all the pro-abortion bumper stickers at the bishops’ conference, the bishops took decisive action: They tightened security at the entrance of the parking lot.
For example, they have consistantly come out in favor of amnesty for illegal immigrants, as shown here and here, a position which goes directly against the Catholic teaching in the Catechism (2241) which insists that immigrants must obey the laws of the land they are emigating to.
They have regularly shown their support of Al Gore and his fellow demoncraps views on "global warming/climate change", as reflected here and here.
When asked about football player Michael Sam's coming out as an active homosexual, the former president of the USCCB (Cardinal Dolan) said "Bravo!", and "Good for him!", and Dolan also has come up shaky on his reactions to many other current moral issues. (See here and here and here for some examples.)
Someone on one of these discussions once recommended that the USCCB should be totally disbanded, and I agree with that goal, as well as the idea of faithful US Catholics ceasing all financial support of all USCCB monetary collections.