The 83rd Legislature, 1st Called Session, enacted S.B. 4 (PLAN C235). The districts are identical to the interim plan, ordered by the U.S. District Court for the Western District of Texas, used in 2012 to elect members of the Texas delegation to the U.S. Congress. This plan is effective January 2013. PLAN C2100 is the representation of the current congressional districts drawn on 2020 census geography.