Robert Costa

The special counsel investigation is pressing witnesses about longtime Trump ally Roger Stone’s private interactions with senior campaign officials and whether he had knowledge of politically explosive Democratic emails that were released in October 2016. As part of his investigation into Russia’s interference in the 2016 campaign, special counsel Robert S. Mueller III appears to be focused on the question of whether WikiLeaks coordinated its activities with Stone and the campaign.

For President Donald Trump — a reality TV star who parlayed his blustery-yet-knowing on-air persona into a winning political brand — television is often the guiding force of his day, both weapon and scalpel, megaphone and news feed. And the president’s obsession with the tube — as a governing tool, a metric for staff evaluation, and a two-way conduit with lawmakers and aides — has upended the traditional rhythms of the White House, influencing many spheres, including policy, his burgeoning relationship with Congress, and whether he taps out a late-night or early-morning tweet. Those Trump tweet-storms, which contain some of his most controversial utterances, are usually prompted by something he has seen on television just moments before.

The president, advisers said, also uses details gleaned from cable news as a starting point for policy discussions or a request for more information, and appears on TV himself when he wants to appeal directly to the public.