Central to their con job was ginning up a rage against the President with lies and absurd fabrications supported by a full court media propaganda blitz.
Going to court to try to compel testimony from people under executive privilege would have been unsuccessful and would have given the public time to cool of and think about things, both of which would have spoiled the Democrat con job
They’d hoped the impeachment proceedings would be enough to tank the stock market, dip the economy, and lower Donald Trump’s support numbers.
They Ef’d up.