So what? The House is in session and the last I checked, your bff Pelosi is still in charge of setting the agenda. Go hold a vote. It's not like it's any surprise that Lewandowski lied, evaded questions and falsely claimed executive privilege. Every witness has run the same script. These assholes are going to keep doing it until there are actual consequences.
I get what you are saying here, but Democrats face the reality of needing to test whether the courts will uphold their actions, rather than getting steam rolled while wondering if the courts would enforce X, Y and Z. Inherent contempt has been upheld twice by the Supreme Court, granted it was in the 1920s and 1930s, but there is still strong precedent on this. They can keep passing the ball around the perimeter looking for a better shot, but the shot clock is winding down on them.
Lewandowski would have been a great person to start enforcing this on, because he is an admitted liar, a hostile and combative witness and has ZERO claim to executive privilege, because he never served in any part of the executive branch.