 He presented his credentials on November 28, 1910 and left his post on October 8, 1913.On May 4, 1920, Jay was appointed U.S. Minister to El Salvador by President Woodrow Wilson, serving from February 10, 1921 until April 28, 1921.After being appointed on April 18, 1921 by President Warren G. Harding, he served from June 30, 1921 to May 9, 1925 as U.S. Minister to Romania, where he assisted in negotiating that country's repayment terms of $42,000,0000 for wartime and post World War I development loans.