He's mixing metaphors I think. In The Godfather, they go to the mattress when the family goes to war with another, they go to a hideout where mattress are laid on the floor, since no one is going home to sleep.
All of this, the GOP videos, clips, footage, depositions must be sending tfg into a rage. The hearings, practically in their entirety, are his party, his staff, advisors, supporters. Is it a witch-hunt when all the evidence and testimony is from your own coven?
Finally, the point. The national security is damaged by this entire shitshow of trump’s doing. It feeds the narrative that democracy doesn’t work, exactly what Russia et al, were hoping for when they installed him.