Those documents and interviews are evidence. Your argument makes no sense in light of any court rulings or US history.
evidence for Mueller - who produced the report.
1. The President can't claim executive privilege for every document produced in the WH. The document must meet the criteria that it was used to help form policy decisions with direct contact with the President. (Thank the GOP Congress for this court ruling.)
there were no claims for Mueller
2. Mueller as part of the executive branch is subject to Congress' power of oversight. Oversight includes the ability to see work product.
incorrect Mueller reports to the AG and the AG can release or not release
Congress cannot investigate unles it's an impeachment - so either impeach or get off the pot.
3. Mueller actually drew several conclusions, one of which was that Congress has the power to impeach a President for obstruction.
Mueller is not the final word, but i tend to agree - but there were no charges of Obstruction
4. Congress power to subpoena for the purposes of impeachment is pretty much unlimited. See the USSC ruling in Nixon.
these are not impeachment hearings
5. Testifying to an investigator in no way means that person no longer has to testify.
neither can witness be bagdered after a case is closed. The Mueller report is over, CONGRESS IS NOT AN "INVESTIGATOR" -as THESE ARE NOT IMPEACHMENT HEARINGS
(Where to you get your idiotic notions?)
whre do you get you elastic definitions from?
6. Being WH counsel doesn't protect from testifying to Congress. It only means the President can claim executive privilege over any advice he gave the President. There is no such thing as blanket privilege.
Rhodes refused to testify to Congress regarding Iran as well
The problem for Dems is that Mueller already covered this ground as an investigator.
Now Congress wants to investigater again and is not an investigative body, unless it'sduring Impeachment hearings.
Congress needs to impeach if it wants to investigate