lay (something) at (one's) feet
To make or hold someone responsible for something. With every other department losing money each year, the managers have laid the company's success at our team's feet. Because I'm their elected official, voters are quick to lay any economic woes at my feet.
lay something at someone's feet
and put something at someone's feet 1. Lit. to place something on the ground in front of someone. The cat came up to me and laid a mouse at my feet. The dog put a rabbit at my feet.
2. Fig. to hold someone responsible for something. I am going to lay this matter at your feet. You are clearly to blame. I will put this matter at your feet. It is your fault.