So your contention is that impeachment of a US president parallels a regular judicial process in this country because the House impeachment process parallels the grand jury process?
If so, aren't grand jurors supposed to be impartial going into the process? Isn't there an impartial judge present while evidence is presented to the grand jury by the prosecution? Doesn't a District Attorney have to agree that there is sufficient substance to the charges before a grand jury is convened? (unless your contention is that Pelosi, Schiff, or Nadler are somehow the equivalent of a DA, which would be patently aburd, imo)
These are all fundamental fair practices that Trump was denied by the House. Or do you think he was fairly afforded these by the House?
Also, your argument is that the Constitution does not lay out a set of rules for how the House conducts the impeachment process, which is correct. So based on that, it was okay to ignore what the minority party wanted in the house, when they claimed the process was unfair, or lacked due process. However, once the process goes to the Senate, somehow, magically, the minority gets to dictate what is fair, or considered due process to the majority? Why the change in approach?
You don't see the glaring lack of consistency in these two positions?