Prime Minister David Cameron on Monday proposed new laws that would give police the power to seize the passports of Britons suspected of having traveled abroad to fight with terrorist groups. A British police officer stands guard outside the Houses of Parliament in London, Monday, Sept. 1, 2014. Britain's Prime Minister David Cameron is expected on Monday to expand powers to combat terrorism in hopes of preventing attacks by Islamist militants returning from terror training in the Middle East. British police officers stand guard outside the Houses of Parliament in London, Monday, Sept.