Senator Mark Warner, D-Va., spoke exclusively with Target USA and confirmed that four of the five key phases of the probe are finished. The fifth and the most potentially explosive — the question of whether there was collusion between the Trump campaign and the Kremlin — is now in progress. During the interview, Warner revealed his belief that Kremlin meddling is not just limited to cyber-attacks and disinformation, but that it may involve people working inside the U.S.