Rush has put conditions on bidders making their identities known to him so that he can have them vetted. He doesn’t want the Dhimmicrats buying the letter back to try to hide it. I think he would disqualify Soros.
In addition to promising to match the winning bid to double the money he has challenged the Dhimmicrats who signed the letter to pony up the money as a group to do the same. I sent him a note suggesting that he publicly add MoveON.ORG, Media Matters and George Soros to that challenge, but ask each of them to match the funds raised, not be part of those who divvy up the pot.
The bidding pre-screening is entirely a financial matter . . .