…A well-constituted court for the trial of impeachments is an object not more to be desired than difficult to be obtained in a government wholly elective. The subjects of its jurisdiction are those offenses which proceed from the misconduct of public men, or, in other words, from the abuse or violation of some public trust. They are of a nature which may with peculiar propriety be denominated POLITICAL, as they relate chiefly to injuries done immediately to the society itself. The prosecution of them, for this reason, will seldom fail to agitate the passions of the whole community, and to divide it into parties more or less friendly or inimical to the accused. In many cases it will connect itself with the pre-existing factions, and will enlist all their animosities, partialities, influence, and interest on one side or on the other; and in such cases there will always be the greatest danger that the decision will be regulated more by the comparative strength of parties, than by the real demonstrations of innocence or guilt.

The delicacy and magnitude of a trust which so deeply concerns the political reputation and existence of every man engaged in the administration of public affairs, speak for themselves. The difficulty of placing it rightly, in a government resting entirely on the basis of periodical elections, will as readily be perceived, when it is considered that the most conspicuous characters in it will, from that circumstance, be too often the leaders or the tools of the most cunning or the most numerous faction, and on this account, can hardly be expected to possess the requisite neutrality towards those whose conduct may be the subject of scrutiny….

Excerpt. By Hamilton. Remainder of 65 available at

http://avalon.law.yale.edu/18th_century/fed65.asp

Interesting that Hamilton does not include “high crimes and misdemeanors, concentrating instead on “abuse or violation of some public trust.”