Here you go (with the exception of two inconsequential words - or more likely abbreviations that I can’t make out):
New York 25 July 1787
Dear Sir,
I was this morning honored with your Excellency’s favor of the 22nd (indecipherable): I immediately delivered the letter it enclosed to Commodore Jones, who being detained by business did not go on the french Sacket, which sailed yesterday.
Permit me to hint, whether it would not be wise & reasonable to provide a strong check to the adoption of foreigners into the administration of our national government; and to declare expressly that the command in chief of the American army shall not be given to, or devolved on, any but a natural born citizen.
Mrs. Jay is obliged by your attention, and assures you of her esteem and regard – with similar sentiments the most cordial and sincere,
I remain
Dear Sir
Your faithful friend (indecipherable)
John Jay
His Excellency General Washington