The inquiry creates a near-term disclosure deadline that can surface the internal rationale, data, and process behind the repeal, increasing litigation and oversight risk for the agency’s related rulemakings. If the repeal stands, EPA analyses can assign lower quantified benefits to air-quality rules, raising the bar for justifying new or tighter standards and making rollbacks easier to defend on cost-benefit grounds. The move also signals heightened congressional scrutiny that can slow implementation timelines for pending air and climate regulations through document production, hearings, and follow-on legislative actions.