Authored by Philadelphia Patriot Tench Coxe* - under the pseudonym "An American Citizen. Parts 1, 2, and 3 of this series were reprinted in the Pennsylvania Gazette in Philadelphia - where a 4th part appeared.
We have seen that the late Honorable Convention, in designating the nature of the chief executive office of the United States, have deprived it of all the dangerous appendages of royalty, and provided for the frequent expiration of its limited powers. As our President bears no resemblance to a king, so we shall see the Senate have no similitude to nobles.
First then not being hereditary, their collective knowledge, wisdom and virtue are not precarious, for by these qualities alone are they to obtain their offices; and they will have none of the peculiar follies and vices of those men who possess power merely because their fathers held it before them, for they will be educated (under equal advantages and with equal prospects) among and on a footing with the other sons of a free people. If we recollect the characters, who have, at various periods, filled the seats of Congress, we shall find this expectation perfectly reasonable. Many young men of genius and many characters of more matured abilities, without fortunes, have been honored with that trust. Wealth has had but few representatives there, and those have been generally possessed of respectable personal qualifications. There have also been many instances of persons, not eminently endowed with mental qualities, who have been sent thither from a reliance on their virtues, public and private. As the Senators are still to be elected by the legislatures of the states, there can be no doubt of equal safety and propriety in their future appointment, especially as no further pecuniary qualification is required by the Constitution.
They can hold no other office civil or military under the United States, nor can they join in making provisions for themselves, either by creating new places or increasing the emoluments of old ones. As their sons are not to succeed them, they will not be induced to aim at an increase or perpetuity of their powers, at the expense of the liberties of the people of which those sons will be a part. They possess a much smaller share of the judicial power  than the upper house in Britain, for they are not, as there, the highest court in civil affairs. Impeachments alone are the cases cognizable before them, and in what other place could matters of that nature be so properly and safely determined? The judges of the federal courts will owe their appointments to the President and Senate, therefore may not feel so perfectly free from favor, affection and influence as the upper house, who receive their power from the people, through their state representatives, and are immediately responsible to those assemblies, and finally to the nation at large. Thus we see when a daring or dangerous offender is brought to the bar of public justice, the people who alone can impeach him by their immediate representatives will cause him to be tried, not by the judges appointed in the heat of the occasion, but by two-thirds of a select body, chosen a long time before, for various purposes by the collected wisdom of their state legislatures. From a pretense or affection of extraordinary purity and excellence of character their word of honor is the sanction under which these high courts in other countries have given their sentence. But with us, like the other judges of the Union, like the rest of the people of which they are never to forget they are a part, it is required that they be on oath.
No ambitious, undeserving or unexperienced youth can acquire a seat in this house by means of the most enormous wealth or most powerful connections, till thirty years have ripened his abilities and fully discovered his merits to his country—a more rational ground of preference surely than mere property.
The Senate, though more independent of the people as to the free exercise of their judgment and abilities than the House of Representatives, by the longer term of their office, must be older and more experienced men, and the public treasures, the sinews of the state, cannot be called forth by their original motion. They may restrain the profusion or errors of the House of Representatives, but they cannot take the necessary measures to raise a national revenue.
The people, through the Electors, prescribe them such a President as shall be best qualified to control them.
They can only, by conviction on impeachment, remove and incapacitate a dangerous officer, but the punishment of him as a criminal remains within  the province of the courts of law to be conducted under all the ordinary forms and precautions, which exceedingly diminishes the importance of their judicial powers. They are detached, as much as possible, from local prejudices in favor of their respective states by having a separate and independent vote, for the sensible and conscientious use of which, every member will find his person, honor and character seriously bound. He cannot shelter himself, under a vote in behalf of his state, among his immediate colleagues. As there are only two, he cannot be voluntarily or involuntarily governed by the majority of the deputation. He will be obliged, by wholesome provisions, to attend his public duty, and thus in great national questions must give a vote of the honesty of which he will find it necessary to convince his constituents.
The Senate must always receive the exceptions of the President against any of their legislative acts, which, without serious deliberation and sufficient reasons, they will seldom disregard. They will also feel a considerable check from the constitutional powers of the state legislatures, whose rights they will not be disposed to infringe, since they are the bodies to which they owe their existence, and are moreover to remain the immediate guardians of the people.
And lastly the Senate will feel the mighty check of the House of Representatives—a body so pure in its election, so intimately connected, by its interests and feelings, with the people at large, so guarded against corruption and influence—so much, from its nature, above all apprehensions, that it must ever be able to maintain the high ground assigned to it by the Federal Constitution.
* COXE, Tench, a Delegate from Pennsylvania; born in Philadelphia, Pa., May 22, 1755; received a liberal schooling; engaged in mercantile pursuits; resigned from the Pennsylvania Militia in 1776, turned Loyalist, and joined the British Army under Howe in 1777; was arrested, paroled, and joined the patriot cause; commissioner to the Federal Convention at Annapolis in 1786; Member of the Continental Congress in 1789; was appointed Assistant Secretary of the Treasury on September 11, 1789, and served until the office was abolished on May 8, 1792; was appointed revenue commissioner June 30, 1792, and served until removed by President Adams; was appointed by President Jefferson purveyor of public supplies and served from 1803 to 1812; was a writer on political and economic subjects; died in Philadelphia, Pa., July 17, 1824; interment in Christ Church Burying Ground.Taken from the Biographical Directory of the United States Congress http://bioguide.congress.gov