Despite these constraints, he oversaw the establishment of a school for deaf-mutes and a reform school for girls.[82] He endorsed the impeachment of President Andrew Johnson and urged his conviction, which failed by one vote in the United States Senate.[83] Nominated for a second term in 1869, Hayes campaigned again for equal rights for black Ohioans and sought to associate his Democratic opponent, George H. Pendleton, with disunion and Confederate sympathies.[84] Hayes was reelected with an increased majority, and the Republicans took the legislature, ensuring Ohio's ratification of the Fifteenth Amendment to the United States Constitution, which guaranteed black (male) suffrage.[84] With a Republican legislature, Hayes's second term was more enjoyable. Suffrage was expanded and a state Agricultural and Mechanical College (later to become The Ohio State University) established.[85] He also proposed a reduction in state taxes and reform of the state prison system.[86] Choosing not to seek reelection, Hayes looked forward to retiring from politics in 1872.