Cato, the pen name of an author who published in New York newspapers in 1787 and 1788, was an Antifederalist whose concerns with the new Constitution and proposed government focused primarily on the president and executive branch. The author, whose identity remains unknown to this day, wrote seven letters, and perhaps chose this pseudonym as a reference to the Roman leader who advocated for republican values and systems in the face of the rise of Julius Caesar.

• Cato I, Opening argument encouraging people to read the Constitution for themselves in order to make up their minds, September 27, 1787
• Cato II, Takes issue with the tone and arrogance of Federalist ally “Caesar,” (Alexander Hamilton), October 11, 1787
• Cato III, Questions the possibility of a single government overseeing such a large republic, and takes issue with what he sees as ‘aristocratic’ tendencies in Southern politics, October 25, 1787
• Cato IV, Points out the president’s vague powers and cautions that they could lead to a European-style, unrepresentative system, November 8, 1787
• Cato V, Responds to Federalist arguments that America would never suffer under tyranny, and addresses legislative elections and ratios of representation, November 22, 1787
• Cato VI, Argues that taxation will be unfair and will fall disproportionately on the lowest rungs of American society, December 13, 1787
• Cato VII, Returns to problems with Congressional elections, January 3, 1788