The Trump White House has intervened to weaken one of the few public health protections pursued by its own administration, a rule to limit the use of a toxic industrial compound in consumer products, according to communications between the White House and Environmental Protection Agency. The documents show that the White House Office of Management and Budget formally notified the EPA by email last July that it was stepping into the crafting of the rule on the compound, perfluoroalkyl and polyfluoroalkyl substances, used in nonstick and stain-resistant frying pans, rugs, and countless other consumer products. The White House repeatedly pressed...