the buck stops here

The phrase "the buck stops here" means that the ultimate responsibility or accountability for a particular matter rests with the person who said it or the situation being referred to. It implies that no one else will take or pass on the responsibility, but rather it will be addressed and resolved by the person or authority in charge. It originated from the phrase used by U.S. President Harry S. Truman, who famously placed a sign on his desk with the words "The buck stops here" to signify his willingness to take responsibility for the decisions made in his administration.