If they're secret, how do you know about them?
How do you know they're real?
Because Comer's "very legit source" with the "17 recorded phone calls" is Luft.
Arresting Luft and putting him on trial would guarantee any real evidence of Biden's involvement with the Russians, Ukrainians, or the Chinese would come out.
Because think about it, if you were the lawyer, and your client says "hey, I have all this evidence that the current President is in deep with the Russians & Chinese" all you have to do is put him on the stand and enter the evidence into the court proceedings.
Like, "ladies and gentlemen of the jury, my client is being politically prosecuted by the current President. Here's why. We have a lot of evidence."
Which seems like a pretty easy case to win.
So... IF any of that were true, having him arrested and put on trial would be the exact opposite of a coverup. Everything he would want covered up would come out.