ROCESTER, UNITED KINGDOM - NOVEMBER 28: British Prime Minister David Cameron delivers a speech on immigration to members of the media at JCB World Headquarters on November 28, 2014 in Rocester, United Kingdom. The Prime Minister proposed curbs on benefits for EU migrants and promised further negotiations with the European Union to ensure that his plans can be enforced. (Photo by Oli Scarff - WPA Pool/Getty Images)
