https://arstechnica.com/tech-policy/2021/10/airlines-reject-texas-ban-on-vaccine-mandates-say-biden-order-takes-precedence/

American Airlines and Southwest Airlines said they will not comply with the Texas governor's ban on vaccine mandates, saying that the US vaccine mandate for federal contractors takes precedence. Both airlines are headquartered in Texas.

"We are reviewing the executive order issued by Gov. Abbott, but we believe the federal vaccine mandate supersedes any conflicting state laws, and this does not change anything for American," an American Airlines spokesperson told The Washington Post and other news organizations. Southwest said that "according to the president's executive order, federal action supersedes any state mandate or law, and we would be expected to comply with the president's order to remain compliant as a federal contractor," according to CNBC.