Mueller digs into attempt to force Sessions to quit
Trump aimed abuse at his appointee
Inquiry asks whether goal was to curb Russia probe
Special counsel Robert S. Mueller III has been investigating a period of time last summer when President Trump seemed determined to drive Attorney General Jeff Sessions from his job, according to people familiar with the matter who said that a key area of interest for the inquiry is whether those efforts were part of a months-long pattern of attempted obstruction of justice.
In recent months, ...