US Senator John McCain on Saturday calls for lifting all the travelling restrictions imposed on Americans, including diplomats, by Pakistani authorities in the country. Pakistan is a main ally of the US in war on terror so it should restore the old travelling system in mutual cooperation, the US Senator said while talking to Pakistani Prime Minister Yusuf Raza Gilani here. Pak-US ties and the current situation in the region was came under deliberation during the meeting, which stressed the need to form a joint strategy for eliminating terrorism.