Thomas James OâÂÂBrien (July 30, 1842 â May 19, 1933) was a politician and diplomat from the U.S. state of Michigan. While serving as Ambassador to Japan, he, along with Japanese Minister for Foreign Affairs Hayashi Tadasu, negotiated the Gentlemen's Agreement of 1907 that addressed the issue of Japanese immigration to the United States and allowed children of Japanese immigrants to attend public schools in California.
O'Brien was born in Jackson, Michigan, on July 30, 1842, the son of Timothy O'Brien and Elizabeth Lander O'Brien. On September 4, 1873, he married Delia Howard (July 14, 1848 - January 22, 1926).
O'Brien was a lawyer by profession and a Republican politician. In 1883 he was an unsuccessful candidate for the office of Justice of the Michigan Supreme Court. In 1896 and 1904 he was a delegate to the Republican National Convention from Michigan.
OâÂÂBrien, a graduate of the University of Michigan law school, held the following posts as ambassador of the United States:
OâÂÂBrien died on May 19, 1933. He is buried with his wife at Oakhill Cemetery in Grand Rapids, Michigan.