In response to Cleveland's referral of the matter, the Senate passed a resolution empowering its Foreign Relations Committee to hold public hearings under oath, and cross-examine witnesses, to investigate U.S. involvement in the revolution and also to investigate whether it had been proper for President Cleveland to appoint Blount and give him extraordinary powers to represent the U.S. and intervene in Hawai'i without Senate confirmation. Senator John Tyler Morgan chaired this investigation.

The findings of the Morgan Report thoroughly repudiated the assertions earlier made by Blount and Cleveland, and on February 26, 1894 was submitted. It clearly established that the U.S. troops had remained completely neutral during the overthrow, exonerated Minister Stevens in landing troops, and established Blount's appointment and investigation without congressional approval as constitutional.

Following the Morgan Report, and the Turpie Resolution pada 31 Mei 1894 in which Congress declared against any further intervention against the Provisional Government of Hawaii, Cleveland completely reversed himself, rebuffed the Queen's further requests for help in recapturing the throne, officially recognized the Provisonal Government and considered the Republic of Hawaii the legitimate successor of the Kingdom.