Special counsel Robert Mueller could begin grilling Trump's White House staff in just a few days

Investigators working for special counsel Robert Mueller could begin interviewing White House staff as early as this week, according to CNN.

Sources told CNN that Mueller is looking to interview former and current White House staffers, including former chief of staff Reince Priebus, former press secretary Sean Spicer, communications director Hope Hicks, and White House counsel Don McGahn, among others.