There is no Gorelick wall today. 9-11 changed a lot of things...President Bush and his team saw to that.
(It was not a law on the books, but some sort of regulation imposed by her, I believe. She might have pretended she was interpreting a law, and the wall was the result of her interpretation of it.) So if not a law passed by Congress, it could not survive in perpetuity just because it was put there by a Justice Dept. bigwig in a previous administration.
As for your question about procedures in the Dept. after Ashcroft finally got on board, and after his Deputies finally got on board - their confirmations happened quite late in the scheme of things I believe - I cannot answer that, but likely someone else can.
Did Reno and Clinton sign off on Gorelick's wall? I think we don't know and would like to know that.
Thanks and Thanks. I forgot about the Senate's delay in appointing Ashcroft. If I recall correctly, the Senate finally approved him in July. I suspect that Clintoon holdovers continued to run the show until Ashcroft was firmly in place.