[1] His grandfather Harold "Pocahontas" Schexnayder was a longtime Louisiana Department of Wildlife and Fisheries game warden,[2] and he spent much of his childhood in the Maurepas Swamp area.

[4] In 1998, Schexnayder opened Car Craft and Rubber Company Automotive, in Sorrento, a town in Ascension Parish, and has operated the business since that time.

[4] Schexnayder was first elected to the Louisiana House of Representatives in 2011 from District 81,[5] which encompasses parts of four parishes: Livingston, Ascension, St. James, and St. John the Baptist.

[8] As chairman of the House Agriculture Committee, Schexnayder opposed a bill in 2018 to allow florists to work without passing a 40-question licensing exam.

[10] In 2019, Schexnayder sponsored legislation to permit and regulate industrial hemp cultivation in the state, and to authorize licensed retailers to sell hemp-derived products, including cannabidiol (CBD oil); The bill passed the legislature and was signed into law by Governor Edwards.

Senator John Kennedy, state Attorney General Jeff Landry and megadonor Lane Grigsby), including the members most hostile to Democratic Governor John Bel Edwards, supported Mack's candidacy[14][13] Edwards urged Democratic representatives to support Schexnayder,[15] and the Republicans who backed Schexnayder generally came from a more moderate wing of the party.

The bill, backed by the Louisiana Legislative Black Caucus, proposed new limits on qualified immunity, a doctrine that bars some victims from obtaining relief in court for police misconduct; it was the outcome of a compromise reached by a task force convened to address police misconduct.

[25] In 2021, Schexnayder ousted Representative Ray Garofalo from his chairmanship of the House Education Committee as part of an intra-party Republican feud over Garofalo's support for a bill that would ban public schools or colleges from teaching that the U.S. or the State of Louisiana is "systematically racist or sexist" and ban the provision of information that "promotes divisive concepts.

[26] Schexnayder pushed legislation to extend Louisiana's movie production incentives for an additional eight years; the bill passed in 2023.