After graduating, though he considered a job teaching Latin and Greek, he instead joined the Concord Monitor,[1] and became a newspaper editor.
He was private secretary to Governor David H. Goodell from 1889 to 1891. Moses then went into journalism, working as a reporter, news editor, and chief editor for the Concord Evening Monitor from 1892 to 1918. Moses was a member of the New Hampshire Forestry Commission from 1893 to 1907, and served as the commission's secretary. Moses was a delegate to the 1908 Republican National Convention.
In 1909 Moses was appointed by President William Howard Taft to be the United States Minister to Greece and Montenegro, and he served until 1912. The appointment was a surprise to Moses, who had opposed Taft's nomination for President at the 1908 convention. Moses was also a delegate to the 1916 Republican National Convention.
United States Senator
In 1918 Moses was elected to the United States Senate from New Hampshire from 1918. He served until 1933 and was President pro tempore from 1925 to 1933. During his Senate service Moses was chairman of: the Committee on Printing (Sixty-sixth through Sixty-eighth Congresses); Committee on Post Office and Post Roads (Sixty-ninth and Seventieth Congresses); and Committee on Rules (Seventy-first and Seventy-second Congresses).