In 1794 Trumbull acted as secretary to John Jay in London during the negotiation of the treaty with Great Britain, and in 1796 he was appointed by the commissioners sent by the two countries the fifth commissioner to carry out the seventh article of the treaty.
In 1794 Trumbull acted as secretary to John Jay in London during the negotiation of the treaty with Great Britain, which largely settled the boundary with Canada. In 1796 he was appointed by the commissioners sent by the two countries as the fifth commissioner, to carry out the seventh article of the treaty.