<Tr> <Td> Dwight D. Eisenhower </Td> <Td> 11! November 13--15, 1953 </Td> <Td> Ottawa </Td> <Td> State visit; Met with Governor General Vincent Massey and Prime Minister Louis St. Laurent and addressed Parliament . </Td> </Tr> <Tr> <Td> 12! July 8--11, 1958 </Td> <Td> Ottawa </Td> <Td> Informal visit; met with Governor General Vincent Massey and Prime Minister John Diefenbaker and addressed Parliament . </Td> </Tr> <Tr> <Td> 13! June 26, 1959 </Td> <Td> Montreal </Td> <Td> Joined Queen Elizabeth II in ceremony opening the St. Lawrence Seaway . </Td> </Tr> <Tr> <Td> John F. Kennedy </Td> <Td> 14! May 16--18, 1961 </Td> <Td> Ottawa </Td> <Td> State visit; met with Governor General Georges Vanier and Prime Minister John Diefenbaker and addressed Parliament . </Td> </Tr>

Who visited niagra falls twice before becoming president