Ignoring the massive cost, legal hurdles, and the opinion of the residents/government/outside powers, if you could magically grant independence to certain territories or form new bigger nations from existing ones with no repercussions to yourself, what new countries would you create?
Please treat this as a non-serious post, let’s not get into a massive political debate, those never end well.
You called dibs with handwaving. The international court of dibs doesn’t recognize such chicanery.
And regardless of your legal standing, I plan to offer unfettered trade access to Redneckistan to the TJ cartel. Combined with the natural skills of our friends in Montana and Wyoming, I think it would be unwise to begin a war. Sanctions or no, I can’t see you coming out ahead bringing Portlandian hipters to the front lines - whether or not their mustache might belong to a civil war general.
Accept our rightful ownership of British Colombia and Baja California (both Norte y Sur) or be prepared to lose even the claim you have rightfully dibsed.