South Carolina Governor Henry McMaster signed into law the Gender-Based Bathroom Bill on Sunday, April 26, completing a swift legislative push that had drawn both fierce support from conservative advocates and protests from LGBTQ+ rights organizations across the state. The bill, which restricts access to bathrooms in public buildings and schools to individuals based on biological sex as defined at birth, passed both chambers of the Republican-controlled General Assembly along party lines earlier in the month.

Congresswoman Nancy Mace, a vocal opponent of transgender rights who has made the issue central to her political brand and is weighing a gubernatorial run, attended the signing ceremony in Columbia. Mace praised the legislation as 'common-sense protection for women and children,' echoing language that has become standard in conservative circles pushing similar measures in Florida, Texas, and other red states.

The signing comes one day after Florida Governor Ron DeSantis signed separate legislation banning local DEI funding, reinforcing a coordinated conservative legislative momentum across Southern states ahead of the 2026 midterm elections. Republican strategists in the region argue these culture-war measures energize the base and draw sharp contrasts with Democratic opponents in competitive districts.

Opponents of the South Carolina bill, including the ACLU of South Carolina and a coalition of LGBTQ+ advocacy groups, announced plans to file a federal legal challenge within 30 days of the bill's signing, arguing it violates equal protection guarantees under the Fourteenth Amendment. Legal analysts note the challenge faces a difficult path given recent federal court rulings that have been less receptive to such arguments under the current judicial landscape.

The law is set to take effect 90 days after signing. School districts across South Carolina have begun consulting with legal counsel on compliance, while civil rights groups pledged to monitor enforcement and document any reported incidents of discrimination stemming from the new statute.