Don’t blame the marketing department. The buck stops with you.

 
“The buck stops here” is a phrase that was popularized by U.S. President Harry S. Truman, who kept a sign with that phrase on his desk in the Oval Office. The phrase refers to the notion that the President has to make the decisions and accept the ultimate responsibility for those decisions.
 
But when the decision is up before you — and on my desk I have a motto which says The Buck Stops Here’ — the decision has to be made.” In his farewell address to the American people given in January 1953, President Truman referred to this concept very specifically in asserting that, “The President–whoever he is–has …

Don't blame the marketing department. The buck stops with the chief executive.

John D. Rockefeller

 
Etymology. Popularized by US president Harry Truman. The phrase is based on the metaphorical expression passing the buck, derived from poker gameplay, that came to mean “passing blame”, or absolving oneself of responsibility or concern by denying authority or jurisdiction over a given matter.