United States Department of State

“ All Americans traveling to Pakistan on official business or for private employment are required to have a visa before arrival, and as the government of Pakistan's clearance process is often lengthy, we urge those coming to apply at the nearest pakistani embassy or consulate as far in advance of their scheduled arrival as possible. ”

“ Any non official American who is in Pakistan for more than 30 days must register with the government's foreigner office. Exit permits are required for those who have stayed longer than 30 days before they are allowed to leave the country. ”