Lie at somebody's door - Idioms by The Free Dictionary
lie at somebody's door
lie at (one's) door
To be one's responsibility. Typically said of something negative. I'm the coach, and I called a bad play, so any blame for this loss lies at my door.
lie at somebody’s door (formal) (of the responsibility for a mistake, etc.) belong to somebody: The main problem is the design of the building and the responsibility for that lies clearly at the architect’s door.