How do you interpret these words from the link to the decision you are talking about: "no judicial involvement, even for the limited purpose of judicial review"?
The language and structure of Art. I, § 3, cl. 6, demonstrate a textual commitment of impeachment to the Senate. Nixon's argument that the use of the word "try" in the Clause's first sentence impliedly requires a judicial-style trial by the full Senate that is subject to judicial review is rejected. The conclusion that "try" lacks sufficient precision to afford any judicially manageable standard of review is compelled by older and modern dictionary definitions, and is fortified by the existence of the three very specific requirements that the Clause's second and third sentences do impose-that the Senate's Members must be under oath or affirmation, that a two-thirds vote is required to convict, and that the Chief Justice presides when the President is tried-the precise nature of which suggests that the Framers did not intend to impose additional limitations on the form of the Senate proceedings. The Clause's first sentence must instead be read as a grant of authority to the Senate to determine whether an individual should be acquitted or convicted, and the commonsense and dictionary meanings of the word "sole" indicate that this authority is reposed in the Senate alone. Nixon's attempts to negate the significance of "sole" are unavailing, while his alternative reading of the word as requiring impeachment only by the full Senate is unnatural and would impose on the Senate additional procedural requirements that would be inconsistent with the three express limitations that the Clause sets out. A review of the Constitutional Convention's history and the contemporary commentary supports a reading of the constitutional language as deliberately placing the impeachment power in the Legislature, with no judicial involvement, even for the limited purpose of judicial review.
