Then you ought to have let your sales departments know. I know a few businesses that had contracted with some of the big telcos for managed services, who specifically asked for data to use Canadian-exclusive routes / not to dip into the USA shortly after the Patriot act went in, and the standard response was that there were some points where there was only 1 route -- so there was a high likelihood that if we "required" that east/west to be fully Canadian, it'd have disruptions due to there being single points of failure.
Source: I've audited banks who've documented these exchanges.