>>He said he hid inside his house around 11 p.m. when someone knocked again, assuming it was Secret Service making a second visit.
So his family sheltered him from questioning and lied to the Secret Service?
That will get you in trouble.
Probably no one answered the door. They can’t force you to open it if they don’t have a warrant. All you’ll accomplish though in the long run is really pissing them off.