So we all know that the Dems know that they didn't have much ground to stand on to impeach Trump. However, the reason they pushed with the farce was because the Supreme Court hears the cases come Feb. 19 I think for MI, WI and GA. If the Supreme Court rules on the cases that those races were indeed fraud, that they should overturn results or throw out the votes that were identified as fraudulent, then it would make Trump the "winner" (even though we already know he is) and decree that the Biden administration must relinquish the power.
This is why they are fortifying the capital, this is why they are keeping the national guard still, this is why they are trying to push for the impeachment to try and block this from happening if the Supreme Court makes that ruling.
Fat chance that SCOTUS does anything useful now.