Detailed Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Q: The father of a fallen U.S. army captain who made headlines for taking on Donald Trump during the American presidential race has cancelled a talk he was set to deliver in Toronto. 
  
 Although organizers have said Khizr Khan's travel privileges are under review, the circumstances remain unclear as Canadian officials told CBC News they know of no reason why the Pakistani-born man would be denied entry to the country. U.S. officials also confirmed that they would not have gotten in touch with someone in advance of a planned trip. 
  
 Khan, who famously offered up his copy of the U.S. Constitution to the then-presidential hopeful who vowed to implement a ban on Muslims entering the U.S., was scheduled to speak at a luncheon hosted by Ramsay Inc. on Tuesday. 
  
 But on Monday, organizers of the luncheon issued a statement saying that Khan would not be travelling to Toronto. 
  
 "Late Sunday evening Khizr Khan, an American citizen for over 30 years, was notified that his travel privileges are being reviewed," Julia McDowell of Ramsay Inc. said. 
  
 Circumstances of review unclear 
  
 The statement goes on to quote Khan, saying he offered his sincere apologies for the cancellation. 
  
 "This turn of events is not just of deep concern to me but to all my fellow Americans who cherish our freedom to travel abroad. I have not been given any reason as to why," the statement quotes Khan as saying. 
  
 CBC News reached out to Khan's law office directly, which said in an email it had no comment. 
  
 The circumstances of the reported travel review aren't clear. Neither Khan nor Ramsay Inc. would provide specifics about what the review entailed or say more about the "turn of events." 
  
 Asked who issued the notice of review to Khan, Bob Ramsay told CBC News, "I don't know exactly who it was, but I do know for sure that it was American." 
  
 In a statement to CBC News, U.S. Customs and Border Protection said it does not contact travellers in advance of their travel out of the United States. 
  
 "With respect to Global Entry or trusted traveller membership, CBP's engagement is about the status of membership in the program, not any particular travel itself," the statement said, adding that any U.S. citizen with a passport can travel without trusted traveller status. 
  
 The agency would not comment on Khan's claim, citing privacy considerations. 
  
 Immigration, Refugees and Citizenship Canada told CBC News on Tuesday that the federal department did not know of any restrictions that would have prevented Khan from entering the country. 
  
 "American citizens are not required to apply for either an Electronic Travel Authorization (eTA) or a temporary resident visa (visitor visa) to enter Canada," spokesperson Nancy Caron wrote in an email. 
  
 'So that we don't all end up sacrificing' 
  
 According to its events page, Khan's Ramsay Talk was to focus on what could be done about "the appalling turn of events in Washington — so that we don't all end up sacrificing everything." 
  
 Khan's son Capt. Humayun Khan, 27, was killed in Iraq in 2004 when a car loaded with explosives blew up at his compound. 
  
 A Muslim challenges Trump at the DNC1:57 
  
 "Have you ever been to Arlington cemetery?" Khan asked Trump, speaking at the Democratic National Convention in Philadelphia last July. 
  
 "Go look at the graves of brave Americans who died defending United States of America. You will see all faiths, genders and ethnicities. You have sacrificed nothing." 
  
 On Monday, U.S. President Donald Trump issued a new travel ban, nearly a month after a federal court refused to reinstate an earlier executive order that blocked travellers from seven Muslim-majority countries, and halted entry to refugees. 
  
 Under the new ban, visa processing for travellers from Iran, Somalia, Sudan, Yemen, Syria and Libya will be suspended for 90 days. It is expected to go into effect March 16. ||||| Khizr Khan was scheduled to speak at a luncheon in Toronto on Tuesday. | Getty Khizr Khan claims travel privileges under review 
  
 Gold Star father Khizr Khan’s “freedom to travel abroad” is reportedly under review, and he says he doesn’t know why. 
  
 Khan was scheduled to speak at a luncheon in Toronto on Tuesday “on what we can do about the appalling turn of events in Washington — so that we don’t all end up sacrificing everything.” The two-hour event was to include a presentation and then a question-and-answer session. 
  
 Story Continued Below 
  
 But Khan was told late Sunday that his traveling privileges were under review, according to Ramsay Talks, which organized the luncheon. 
  
 “As a consequence, Mr. Khan will not be traveling to Toronto on March 7th to speak about tolerance, understanding, unity and the rule of law,” it said in a statement. “Very regretfully, Ramsay Talks must cancel its luncheon with Mr. Khan. Guests will be given full refunds.” 
  
 Individual tickets were priced at about $100. 
  
 Khan said in a statement that he was confused about why his travel status changed, without explaining in detail the circumstance. 
  
 “This turn of events is not just of deep concern to me but to all my fellow Americans who cherish our freedom to travel abroad,” Khan said. “I have not been given any reason as to why. I am grateful for your support and look forward to visiting Toronto in the near future.” 
  
 It’s not clear exactly what Ramsay Talks meant by "traveling privileges,” and the group did not respond to a request for comment, nor did Khan. 
  
 A U.S. Customs and Border Protection official, citing privacy issues, declined to discuss Khan specifically but appeared to dispute the report, telling POLITICO that CBP doesn’t contact travelers in advance of their travel abroad. 
  
 “With respect to Global Entry or trusted traveler membership, CBP’s engagement is about the status of membership in the program, not any particular travel itself,” the official said. “Of course, any U.S. citizen with a passport may travel without trusted traveler status. All individuals are subject to inspection departing or upon arrival to the United States.” 
  
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 Khan became a national name when he blasted then-Republican presidential nominee Donald Trump from the stage of the Democratic National Convention, telling Trump he had “sacrificed nothing” and, as he held up a pocket-size Constitution, asked Trump whether he had even read it. 
  
 Khan has been a U.S. citizen for more than 30 years, and his son, Humayun Khan, a University of Virginia graduate and Muslim American Army captain who died in Iraq in 2004, was posthumously awarded a Bronze Star and Purple Heart. 
  
 News of Khan’s travel restrictions, first reported by CTV News, followed the release Monday of Trump’s revised executive order banning travel from six Muslim-majority nations. The ban, which will go into effect March 16, would not have impacted Khan. |||||
A:
Gold Star father and prominent President Trump critic Khizr Khan has called off a speech he was due to deliver in Canada because "his travel privileges are being reviewed," the organizer of the Toronto talk says. Khan, a Pakistani-American lawyer who has been a US citizen for more than 30 years, was told about the review Sunday evening, according to a Facebook post from Ramsay Talks. "This turn of events is not just of deep concern to me but to all my fellow Americans who cherish our freedom to travel abroad," the post quotes Khan as saying. "I have not been given any reason as to why." He had been due to "speak about tolerance, understanding, unity, and the rule of law," Ramsay Talks noted. A US Customs and Border Protection official declined to discuss the specifics of the case but told Politico that CBP does not contact people before they travel abroad and that with the Global Entry or Trusted Traveler programs, CBP is concerned with membership, not the travel itself. "Of course, any US citizen with a passport may travel without Trusted Traveler status," the official said. "All individuals are subject to inspection departing or upon arrival to the United States." Bob Ramsay of Ramsay Talks tells the CBC that he isn't sure who contacted Khan, but he does "know for sure that it was American." (Khan, whose son was killed in Iraq, famously offered to lend Trump his copy of the Constitution.)