Great Canadian Flag Debate a blue background. Pearson preferred this choice, as the blue bars reflected Canada's motto, "From Sea to Sea". On June 15, 1964, Pearson opened the parliamentary flag debate with a resolution: Pearson sought to produce a flag which embodied history and tradition, but he also wanted to excise the Union Jack as a reminder of Canada's heritage and links to the United Kingdom. Hence, the issue was not whether the maple leaf was pre-eminently Canadian, but rather whether the nation should exclude the British-related component from its identity. Diefenbaker led the opposition to the Maple Leaf flag, arguing for the
Great Canadian Flag Debate membership in the Commonwealth of Nations. Senate approval followed on December 17, 1964. The "Royal Union Flag", as it would be officially termed, would be put alongside the new flag on days of Commonwealth significance. Queen Elizabeth II approved the Maple Leaf flag by signing a royal proclamation on January 28, 1965, when both Prime Minister Pearson and Leader of the Opposition Diefenbaker were in London attending the funeral of Sir Winston Churchill. The flag was inaugurated on February 15, 1965, at an official ceremony held on Parliament Hill in Ottawa in the presence of Governor General Major-General Georges Vanier,