What agency is responsible for national elevator safety standards?

The American Society of Mechanical Engineers (ASME) is widely recognized for establishing national elevator safety standards through its document, ASME A17.1, which outlines safety requirements for elevators and escalators. This standard is vital in ensuring safe practices in design, construction, installation, operation, inspection, testing, maintenance, alteration, and repair of elevators. ASME works to ensure that elevator systems are not only efficient but also safe for public use, and these standards are adopted by many jurisdictions across the United States. This makes ASME the leading agency in developing and promoting elevator safety standards at a national level.

Other organizations may play supportive roles or have responsibilities in specific areas related to safety, but ASME's role as the standard-setting body makes it the primary authority on elevator safety standards in the context of this question.