I’m sure there was some kind of “statement” that the USCCB put out, but what particular declaration are you referring to?
https://www.catholicculture.org/culture/library/view.cfm?recnum=8962
I will look when I get to chance ...
I am still working on your question
this is all I have right now
this priest was a Traditionalist ... one man’s opinion
http://www.catholicapologetics.info/modernproblems/vatican2/conciliar.htm
In practice, it is fair to say the US Bishops are deciding themselves who their new bishops will be.
http://www.usccb.org/about/leadership/appointing-bishops.cfm