A former employee of this government agency, Brent Efron, compared this agency’s work to “throwing gold bars off the edge” on a Tinder date in a clip (-5[1])since used to justify investigations of it. A 1980s ruling supporting this government agency, then led by Anne Gorsuch, created deference to federal experts in interpreting (10[1])unclear laws, but was (-5[1])overturned in 2024. (10[2])This government agency plans to rescind a (10[1])2009 “endangerment finding” (10[1])as part of (10[1])what Lee Zeldin has called the US’s “greatest day of deregulation,” including changing NAAQS regulations on PM 2.5. For 10 points, what Nixon-era (10[2])government agency is responsible for enforcing laws like the Clean Air Act? ■END■ (10[5])