Wait! Vetting?
You mean, the way they forgot to vet Flynn, Manafort, and the many individuals singing like canaries in front of Muller? 
Miller has been charged by police in his home state of Ohio with multiple offenses. In 2007, he was charged with assault, disorderly conduct and resisting arrest after punching another male in the back of the head and running away from police, police records show.
He pleaded no contest to two misdemeanor charges, and the case was later dismissed as part of a program for first offenders, court records show.
In 2009, he was charged with underage drinking, a case that also was later dismissed under a first offenders’ program. The following year, he pleaded guilty to a disorderly conduct charge related to another altercation in Cleveland Heights, Ohio. That episode was related to a fight involving Miller shortly after leaving a hookah bar at about 2 a.m. one morning. During the fight, Miller punched through a glass door, cut his wrist and left a trail of blood as he wandered off, a police report said.