Impeachment is still a "LEGAL" proceeding and therefore is supposed to follow the legal rules established for such hearings. In the case of the Senate, it is their job to view evidence, hear from witnesses and then vote to convict or acquit.
Mitch McConnell has already established that he does not plan to review evidence or hear from witnesses. He is in essence abdicating his constitutional duty as a senator in an impeachment trial. So, because the senate chooses to ignore evidence of criminality it further establishes 14's conclusion that this IS a political process rather than a legal one as all sense of legality and propriety have been discarded for party politics with no desire to discover truth or uncover improprieties.
Since the GOP have already proven that they plan to continue abetting Trump despite all appearances of criminality, the destruction of the Constitution and the complete disregard and trashing of America's reputation as a world leader this only furthers proves the argument that this is a political process rather than criminal (because criminals are usually expected to pay for their misdeeds).
The "law and order" party indeed.