Education
He attended the University of Texas at Austin from 1897 to 1899 and graduated from its law department in 1900.
He attended the University of Texas at Austin from 1897 to 1899 and graduated from its law department in 1900.
He was admitted to the bar the same year and served as prosecuting attorney of Comanche County from 1900 to 1902. He served as delegate to Democratic State conventions in 1896, 1898, 1900-1916, and 1920-1926. Callaway was elected as a Democrat to the Sixty-second, Sixty-third, and Sixty-fourth Congresses, serving March 4, 1911 - March 3, 1917.
He was an unsuccessful candidate for renomination in 1916.
He returned to his ranch near Comanche, Texas, where he engaged in agricultural pursuits and stock raising, and also in the practice of law in Comanche. He died in Comanche, Texas, January 31, 1947, and was interred in Oakwood Cemetery in Comanche.
Callaway served on the Committee on Expenditures in the Treasury Department 1912-1913, the Committee on Expenditures in the Department of the Interior 1914-1915, and then the Naval Affairs Committee for the remainder of his incumbency. This included vigorous opposition to huge river and harbor appropriations bills such as making the Trinity and Brazos rivers navigable.
Callaway came to national attention in 1916 with his opposition to the naval appropriation bill.
He believed that a civilian army could repel any invasion, that battleships had been made obsolete by submarines, and that the military expenditures called for by the Preparedness Movement unduly favored munition makers. Some of his strong words against other congressmen on the subject were expunged from the Congressional Record. His opposition to preparedness was a major factor in his loss of the renomination bid to James Clifton Wilson, and he retired to Comanche on March 3, 1917.
Callaway"s tenure was marked by outspoken fiscal conservatism and sharp questioning of every federal expenditure.