Imran Khan is, according to numerous polls, the most popular politician in Pakistan and may very well be that country's next Prime Minister. He is also a vehement critic of US drone attacks on his country, vowing to order them shot down if he is Prime Minister and leading an anti-drone protest march last month.
On Saturday, Khan boarded a flight from Canada to New York in order to appear at a fundraising lunch and other events. But before the flight could take off, US immigration officials removed him from the plane and detained him for two hours, causing him to miss the flight.
On Twitter, Khan reported that he was "interrogated on [his] views on drones" and then added: "My stance is known. Drone attacks must stop." He then defiantly noted: "Missed flight and sad to miss the Fundraising lunch in NY but nothing will change my stance."
The State Department acknowledged Khan's detention and said: "The issue was resolved. Mr Khan is welcome in the United States." Customs and immigration officials refused to comment except to note that "our dual mission is to facilitate travel in the United States while we secure our borders, our people, and our visitors from those that would do us harm like terrorists and terrorist weapons, criminals, and contraband," and added that the burden is on the visitor "to demonstrate that they are admissible" and "the applicant must overcome all grounds of inadmissibility."