 He was re-elected to this office six times (1898, 1900, 1902, 1904, 1906 and 1908) before losing the nomination for the 1910 election.During his last few terms in the U.S. House and for several years after leaving that body, Howard served on the Board of Regents of the Smithsonian Institution (1905 through 1912) and was a trustee of the Carnegie Endowment for International Peace.President Howard Taft appointed Howard to the United States Tariff Board in 1911 and he served in that capacity until 1913.