In case you missed it (I did): Jan. 6 panel will issue 'criminal referrals' for subpoena defiers

[Silent3]

22. Which is why I'm a bit despondent about success, soon or ever

If I had my way (which I won't ever have), I'd amend the Constitution to put a strict time limit on appeals of Congressional subpoenas, force courts to take any appeals on a speedy emergency basis, and give Congress its own small police force to arrest and detain those who evade subpoenas, and to confiscate subpoenaed evidence.

To prevent abuse of this power members of Congress would be subject to criminal consequences for abusing their subpoena power, but THAT would be the battle that could be allowed to drag out in court for months or years. In the meantime benefit of the doubt goes to Congress, testimony and evidence would come first, with no more delay than a month, and with any disputes and possible penalties wrapped up later.