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
Flag of Canada prime minister, declined to act on the report, leaving the order to fly the Canadian Red Ensign in place. By the 1960s, debate for an official Canadian flag intensified and became a subject of controversy, culminating in the Great Flag Debate of 1964. In 1963, the minority Liberal government of Lester B. Pearson gained power and decided to adopt an official Canadian flag through parliamentary debate. The principal political proponent of the change was Pearson. He had been a significant broker during the Suez Crisis of 1956, for which he was awarded the Nobel Peace Prize. During the crisis, Pearson