This politician served on the Dillingham Commission, where he advanced the nativist ideas he proposed in The Great Peril of Unrestricted Immigration. George Frisbie Hoar sponsored a bill named for this politician that countered the Mississippi Plan and guaranteed (15[1])the rights of African Americans to vote in the South. This politician chaired the committee that investigated war crimes in the Philippine-American (15[1])War. While serving as Chair of the Senate (*) Foreign Relations Committee, this politician opposed a resolution of the Shandong Problem in the sixth of fourteen namesake “resolutions.” This (10[1])Massachusetts (10[1])senator (10[2])led the moderate faction (10[1])between the Irreconcilables (10[1])and Woodrow (-5[1])Wilson (10[1])on the question of ratifying the Treaty of Versailles. For 10 points, (10[1])name this Massachusetts senator who led the opposition to American entry into the League of Nations. (10[1])■END■ (10[2]0[2])