WASHINGTON — Scott Pruitt, the Environmental Protection Agency administrator, returned to Capitol Hill on Wednesday and fielded questions from lawmakers about allegations of ethical abuses and excessive spending. The hearing, before the Senate Appropriations subcommittee on the environment, was…

Primary elections in four Republican-leaning states rattled Congress on Tuesday night, as voters ejected a sitting member of the House and set up intense campaigns for the Senate in several battlegrounds. Republicans averted a worst-case scenario — the nomination…