I fear you missed the point. In the Clinton impeachment, we had the same Congressional makeup that we have today - Republican-controlled House and Democrat-controlled Senate.
Even if the House wanted to open the justifiable door of trying to impeach the Won, it would be squelched in the Senate. Just like the Clinton impeachment.
The main objective is not to remove Obama from office, although that could even be possible depending on what comes out in the investigation, the main objective is to expose what he has done and show Americans how the MSM covered up all his crimes. And it will tie him up and stall his agenda. And actually having the dems in control of the senate, will make the knee jerk reaction from the usual suspects on the left, more muted. They know he will probably survive the Senate vote.