I believe as a matter of church law, bishops’ conferences cannot teach binding doctrine unless it is approved by the Holy See, or something like that. I believe that is what the good bishop is referring to here. The USCCB document is just a statement of opinion of the body of bishops, but does not usurp the teaching office of a bishop in his diocese.
This is just another attempt to confuse the abortion issue.Every Bishop who has spoken out against the position of Obama,Biden and Pelosi on abortion agree that abortion is an intrinsic evil. I believe that the unity on the abortion issue of the Catholic Bishops is going to be a big factor in this election.