In politics (outside of official capacities), not only can one get away with libel, slander, hearsay, bearing false witness and a myriad array of other techniques, but these are standard electoral tactics & practices. However, problems arise when one attempts to apply standard legal procedures with respect to evidence, witnesses, due process, etc.
So, using this frame of reference, why would the Senate explore a set of purely partisan, political procedures with respect to creating the initial impeachment false narratives, constructing the hoaxblower complaint/testimony, and the involvement of other associated parties? It has absolutely no legal bearing on anything; every elected official knows the game, how it's played, and what is personally at stake. If you don't like it, don't run for office.
I fully expect the Senate to vote for dismissal after the first procedural steps are completed. Doing so will confirm - and establish a lasting precedent - that any future House attempts to impeach on purely partisan political grounds without criminal foundation will fail. But to get to that stage, certain elementary procedural steps need to first fully play out.
As to your other point, since this impeachment is lacking any criminal element and is entirely political, it really has nothing to do whatsoever with ongoing criminal investigations of events that took place **outside** of the political spectrum. I'm referring of course to the deep state coup attempt that is most certainly subject to the legal domain.
Got a great Email today from the White House (they send out emails regularly)....
First - the White House cited just a few of Schitt’s lies from today:
• Schiff claims that President Trump endorsed the theory that Russia did not interfere in the 2016 election. FACT: President Trump has publicly said, very clearly, that he accepts the conclusion of the intelligence community that Russia interfered in 2016.
• Schiff says that President Trump withheld an Oval Office meeting from President Zelenskyy. FACT: President Trump invited President Zelenskyy to the White House—with no preconditions—on THREE occasions: April 21, May 29, and July 25. They met at the first opportunity, at the UN General Assembly.
• Schiff once again brought up claims of a “quid pro quo.” FACT: Notice what’s not in Democrats’ articles of impeachment? Allegations or accusations of a quid pro quo. They couldn’t include that claim—because no such arrangement existed.
Then the email gave a link to hear Our magnificent President’s speech at Davos (In case you missed all the MSM’s coverage of it - /s)_
https://www.youtube.com/watch?v=ytYygV347sc
Now Schitt back to quid pro quo