That power is quite limited as a practical matter. They can throw someone into the jail they have at the Capitol for a while for contempt, but they cannot prosecute someone of federal crimes. And Boehner has even ruled out that as an option, at least with regard to Lehrner...
You in Post 25: The sad fact is that Congress only has two tools available to it in the Constitution when it comes to oversight of the other two branches of government - the power of the purse and impeachment.
You in Post 37: That power is quite limited as a practical matter.
Your first assertion is mistaken, which you tacitly admit later by saying Congress’ Inherent Contempt power is “quite limited”, a claim which itself is an unsupported assertion.
Do you have any other reasons why Congress can not do anything?
First you need to squeeze Johnnie out of the Gin bottle.