According to the Democratic Playbook, their next step will be to launch a congressional investigation about how Rush came to aquire the original letter. I am sure there is some law that they can find that was broken that led to the “leak” of this document.
No such chance. Oh, sure they might try some such nonsense, but it won't work.
A senator mailing an item to a private citizen has no classified or secret status.
Rush said he was given the original letter by the Clear Channel addressee, to whom the letter was sent, who is his friend.