snippet, when John Yoo is calling this out, Trump & republicans ought to know they are in the swamp.
Clash Between Trump and House Democrats Poses Threat to Constitutional Order
By Adam Liptak
....
John Yoo, a law professor at the University of California, Berkeley, and a former official in the George W. Bush administration, said Mr. Trump’s approach was novel and dangerous.
“The thing that’s unusual is the blanket refusal,” Professor Yoo said. “It would be extraordinary if the president actually were to try to stop all congressional testimony on subpoenaed issues. That would actually be unprecedented if it were a complete ban.”
“He’s treating Congress like they’re the Chinese or a local labor union working on a Trump building,” he said.
more:
http://www.nytimes.com/2019/05/07/us/politics/trump-democrats.html

DO SOMETHING!