ID: When I heard the announcement, my thoughts returned to May of 1956 and the original TransCanada Pipelines Limited's (TCPL) system to Central Canada through Northern Ontario, which was debated in the Canadian House of Commons. The controversy eventually led to the defeat of the Liberal government in the Canadian general election the next year and the Progressive Conservatives, led by John Diefenbaker, taking power. Fifty-five years later, the president of the United States found himself walking in the same shadow facing his own political end.