sentences:  In 1838, Henderson was elected a Whig to the United States Senate, serving one full term, 1839 to 1845.There, he served as chairman of the Committee on Engrossed Bills in the 26th Congress, of the Post Office and Post Roads in the 27th Congress and of the Committee on Private Land Claims in the 27th Congress and 28th Congresses.Afterwards, Henderson resumed practicing law in New Orleans, Louisiana.