US gets tougher on Russia; new sanctions, accusations

White House press secretary Sarah Huckabee Sanders speaks Wednesday during the daily briefing at the White House in Washington. (AP Photo/Susan Walsh)

WASHINGTON — In its toughest challenge to Russia to date, the Trump administration accused Moscow on Thursday of an elaborate plot to penetrate America’s electric grid, factories, water supply and even air travel through cyber hacking. The U.S. also hit targeted Russians with sanctions for alleged election meddling for the first time since President Donald Trump took office.