Sorry; we are talking about a specific study done by the canadian armed forces - slightly different from what you're discussing. Said study did indeed address what you're describing however! One of the scenarios for the civil-war-triggering military action was the annexation/secession/alberta-ness, which would need to be backed by the US military (given that all but the southern edge would be a strategic nightmare to hold, especially when surrounded on three sides).
I'm not sure there's many parallels between hawaii and alberta, but I am super curious what you mean!