Angell put his academic career on hold at several points in order to carry out a variety of diplomatic assignments, including serving as minister to the
Qing Dynasty in China and the
Ottoman Empire as well as negotiating maritime treaties with Britain and Canada. He remained president of the University of Michigan throughout, but took leaves of absence with acting presidents managing in his place.
Minister to China In February 1880, Secretary of State
William M. Evarts asked Angell to go to China to negotiate changes to the
Burlingame Treaty that would reduce the flow of Chinese immigrants into the Pacific United States. Angell was nominated by
President Hayes, confirmed by the Senate as
minister to China and chairman of the treaty commission on April 9, 1880. Angell left for
Peking that June with fellow commissioners
John F. Swift and
William Henry Trescot, and presented his credentials on August 16, succeeding
George Seward. Henry S. Frieze was appointed acting president of the University of Michigan in his absence. The commission negotiated two treaties. The first, formally called the Treaty Regulating Immigration from China and dubbed by historians as the
Angell Treaty of 1880, allowed the U.S. to regulate and limit the immigration of Chinese laborers, but not to prohibit it outright. The second was a trade treaty that outlawed the trade of
opium and set tonnage dues and tariffs to be the same for both nations. The treaties, collectively, were signed on November 17, 1880, and the other commissioners returned home, leaving Angell in China to fulfill his duties as minister. After a year, he decided to return to academia and left China on October 4, 1881, taking a trip through Europe and returning to Ann Arbor on February 24, 1882. Angell was succeeded in his post by
John Russell Young.
Maritime commissions In the fall of 1887,
President Cleveland appointed Angell to a three-man commission, along with
William L. Putnam and Secretary of State
Thomas F. Bayard, to negotiate with the
British government regarding fishing rights off the coast of
Canada, which had been a source of misunderstanding between Canada and the U.S. since they were first agreed to in the
Treaty of 1818. The results of these negotiations, the
Bayard-Chamberlain Treaty, was signed on February 15, 1888, but subsequently failed ratification in the U.S. Senate, whose Republican majority had objected to the formation of the commission in the first place. On November 4, 1895, President Cleveland appointed Angell to the Deep Waterways Commission, along with
John E. Russell and Lyman E. Cooley. The commission, created by Congress, was to negotiate an agreement between the U.S. and Canada regarding the creation of a waterway to allow ocean-going traffic between the
Great Lakes and the
Atlantic Ocean. They undertook a feasibility study and forwarded proposals for further appropriations to Congress, but little was done, and it was not until 1959 that the
St. Lawrence Seaway finally opened.
Minister to the Ottoman Empire President McKinley asked Angell to serve as
Envoy Extraordinary and Minister Plenipotentiary to the Ottoman Empire in April 1897, and he agreed on the condition he could return home after a year if he wished. Angell's nomination encountered brief opposition from
Constantinople, first because of reports that he had accused
Russia of fomenting unrest in the region, and then because Sultan
Abdul Hamid II had confused Angell's
Congregationalist faith with the
Congregation of Jesuits, of whom he had a poor opinion. These objections were resolved by Angell's denial of the former report and clarification to the Sultan on the latter misunderstanding; the Senate confirmed him and he sailed to Europe on the
SS Normandie in July, then on to Constantinople, where he presented his credentials to the Sultan on September 3, succeeding
Alexander W. Terrell. The University of Michigan regents appointed
Harry Burns Hutchins acting president in his absence, through October 1898. The pressing issue facing Angell in the Ottoman Empire was the protection of American missionaries during the unrest following the
massacre of Armenians that had been carried out over the previous two years, as well as compensation for damage to their properties they claimed were caused by both the deliberate actions and the inaction of Turkish forces. He was mostly unsuccessful on this front, except for negotiating a $50,000 surcharge on a warship the Ottoman Empire was purchasing from an American firm, with the understanding that this would be used to resolve the claims of damages (and which was eventually paid in 1901). Angell blamed this failure in part on the outbreak of the
Spanish–American War causing American naval ships to leave the area and remove pressure on the Sultan. Angell and his wife toured the Middle East from January to March 1898, visiting
Cairo,
Jerusalem,
Damascus,
Beirut, and
Ephesus. President McKinley was disturbed by a request from Angell to send American warships to "rattle the Sultan's windows"; he feared it would lead to an event like the sinking of the
Maine, and approached
Oscar S. Straus about taking over the post. Angell himself was becoming discouraged by his inability to win concessions from the Turkish government and submitted his resignation in May. He had his final audience with the Sultan on August 5 and left his post on August 13, traveling home by way of
Greece, Italy,
Switzerland, and France. == Later years ==