By ALAN SUDERMAN
RICHMOND, Va. (AP) — The Transportation Security Administration is issuing new directives and recommendations aimed at strengthening the cybersecurity defenses of U.S. rail and airport operators. The Biden administration said Thursday the new requirements are part of a broader effort at protecting the nation’s critical infrastructure from ongoing cyberespionage and a surge in disruptive ransomware attacks. The new regulations are similar to ones issued in May for pipeline operators following the Colonial Pipeline ransomware attack that disrupted gas supplies in several states. Republican lawmakers have expressed concern that the TSA has crafted new cybersecurity directives without enough transparency and input from affected industries.