Cook served as the chairman of the Texas House State Affairs Committee and as a member of the Texas House Calendars Committee. He is also a member of the Texas House Republican Caucus and Texas Conservative Coalition. Cook has also served in past legislative sessions as chairman of the Texas House Committees on Civil Practices and the Committee on Environmental Regulation; and as a member of the Texas Sunset Advisory Commission.
During the 2015 Texas legislative session, Cook, who is generally considered to be a moderate Republican, filed a bill to allow illegal immigrants to obtain one-year driving permits, which received pushback from lawmakers within the state.[5]
Cook is one of two named investor victims in securities fraud charges filed against Texas Attorney GeneralKen Paxton in 2015. Cook and Paxton had earlier been friends who served together in the Texas House of Representatives.[6]
In the March 2016 Republican primary, Cook defeated Thomas McNutt, a Tea Party challenger and an heir of the Collin Street Bakery in Corsicana.[8] Cook won nomination to his eighth term by 225 votes, 14,421 (50.4 percent) to McNutt's 14,196 (49.6 percent).[9] McNutt's campaign claimed that there was voter fraud in Hill County during the primary.[10][11] After investigation, the Hill County Election Administration Board and the Hill County Election Administrator declared that there was no voter fraud in the primary.[12]
McNutt ran again in the 2018 primary but lost the nomination to Cook's preferred successor, Cody Harris, who then prevailed in the general election, 36,471 votes (78.3 percent) to 10,136 (21.7 percent) for the Democrat Wesley D. Ratcliff.[13]
Personal life
Cook and his wife, Kay, have two daughters.[14] Outside of his political career, Cook is a businessman and rancher.[15]