It was amended on 30 August 1954 by the Atomic Energy Act of 1954, which allowed for greater exchange of information with foreign nations and paved the way for the Agreement for Co-operation Regarding Atomic Information for Mutual Defence Purposes, which was signed on 15 June 1955. On 13 June 1956, another agreement was concluded for the transfer of nuclear submarine propulsion technology to Britain, which saved the British government millions of pounds in research and development costs. It precipitated a row with the JCAE over whether that was permitted under the Atomic Energy Act of 1954 and whether Britain met the security standards set by the 1955 agreement. With the 1956 presidential election approaching, Eisenhower was forced to rescind the offer.