Jim Marrs, in his book Crossfire: The Plot That Killed Kennedy, speculated that the assassination of Kennedy might have been motivated by the issuance of Executive Order 11,110.[30] This executive order enabled the Treasury to print silver certificates, bypassing the Federal Reserve System. Executive Order 11,110 was not officially repealed until the Ronald Reagan Administration. Official explanations claim that the executive order was simply an attempt to drain the silver reserves, and did not actually endanger the careers of anyone working at the Federal Reserve.[31]
This theory was further explored by U.S. Marine sniper and veteran police officer Craig Roberts in the 1994 book, Kill Zone.[32] Roberts theorized that the Executive Order was the beginning of a plan by Kennedy whose ultimate goal was to permanently do away with the United States Federal Reserve, and that Kennedy was murdered by a cabal of international bankers determined to foil this plan.
Actor and author Richard Belzer has also expressed a belief in this theory. According to Belzer the plot to kill Kennedy was set in motion as a response to the President's attempt to shift power away from the Federal Reserve and to the U.S Treasury Department.