No, it is not. It is a farce as is all things liberal. All Trump would have to do is take this to the USSC and have it tossed. Not even the chief justice attended because this is an improper procedure.
The Chief Justice only presides when the President is being tried. Donald Trump is not the President.
As for the Supreme Court, try reading its precedent on a potential review of an impeachment.
Nixon v. United States, 506 U.S. 224, 234-35 (1993)
(234) “There are two additional reasons why the Judiciary, and the Supreme Court in particular, were not chosen to have any role in impeachments.”(235) “Judicial involvement in impeachment proceedings, even if only for purposes of judicial review, is counterintuitive because it would eviscerate the ‘important constitutional check’ placed on the Judiciary by the Framers.”
Having no role to play, the Court has played no role in impeachments for more than two centuries, and will continue to play no role in impeachments until the Constitution changes or they reinterpret the Constitution.
You missed the entire point. The congress cannot impeach a private citizen. Try explaining that one away.