Following his service as governor, Morehead resumed his legal practice in
Frankfort, Kentucky. In March 1837, he was commissioned by Governor
James Clark to act as an agent for the state, selling bonds to fund internal improvements. He returned to the state House from 1837 to 1838, representing
Franklin County. He was president of the Kentucky Board of Internal Improvements from 1838 to 1841, and in 1839, he and
John Speed Smith were chosen as commissioners to the state of
Ohio to secure the return of Kentucky-owned slaves as property of their masters. They were successful in this endeavor. Following his first wife's death in 1838, Morehead married Lavinia Espy in 1839. The couple had six children together, five sons and a daughter. Learned in Kentucky history, Morehead published
An Address in Commemoration of the First Settlement of Kentucky, which contained original information regarding the early settlement of
Boonesborough, Kentucky, in 1840. In 1846, he published another book,
Practice in Civil Actions and Proceedings at Law. In 1841, Morehead was elected to the U.S. Senate and served from March 4, 1841, to March 3, 1847. There he was chairman of the
U.S. Senate Committee on Indian Affairs and the
Committee on Retrenchment. During his service in the Senate, he defended a federal bank bill and opposed the
annexation of Texas, though he supported the
U.S.-Mexican War after it began. He was also a staunch supporter of fellow Kentuckian
Henry Clay. After his time in Congress, he continued the practice of law in
Covington, Kentucky, until his death. He was interred in the State lot of
Frankfort Cemetery,
Frankfort, Kentucky. The city of
Morehead, Kentucky, was named after him. ==References==