Federalist No. 64 is an essay by John Jay

John Jay

John Jay was an American politician, statesman, revolutionary, diplomat, a Founding Father of the United States, and the first Chief Justice of the United States ....

, the sixty-fourth of the Federalist Papers

Federalist Papers

The Federalist Papers are a series of 85 articles or essays promoting the ratification of the United States Constitution. Seventy-seven of the essays were published serially in The Independent Journal and The New York Packet between October 1787 and August 1788...

. It was published on March 5, 1788 under the pseudonym

Pseudonym

A pseudonym is a name that a person assumes for a particular purpose and that differs from his or her original orthonym...

 Publius, the name under which all the Federalist Papers were published. It is titled, "The Powers of the Senate." This theme was continued in Federalist No. 65

Federalist No. 65

Federalist No. 65 is an essay by Alexander Hamilton and the sixty-fifth of the Federalist Papers. It was published on March 7, 1788 under the pseudonym Publius, the name under which all the Federalist Papers were published. Titled, "The Powers of the Senate Continued", it carries on a theme begun...

, but that essay was written by Alexander Hamilton

Alexander Hamilton

Alexander Hamilton was a Founding Father, soldier, economist, political philosopher, one of America's first constitutional lawyers and the first United States Secretary of the Treasury...

; No. 64 is the last of Jay's five contributions to the series.

The paper addresses critics' oppositions towards the concurrent power of the President and the Senate to make and approve treaties.