President Donald Trump’s nominee to oversee chemical safety at the Environmental Protection Agency has for years accepted payments for criticizing studies that raised concerns about the safety of his clients’ products, according to a review of financial records and his published work by The Associated Press. Michael L. Dourson’s nomination as head of EPA’s Office of Chemical Safety and Pollution Prevention was to be considered by a Senate committee Wednesday, but was postponed when the Senate adjourned early for the week. If confirmed, ethics experts said, Dourson’s past writings and the money paid to him and a nonprofit he founded...