NAU: What's the Plan? Continuation from TP's Thread

The NAU thread from TP is getting lengthy and is most likely going to turn hostile, so I thought I'd start a fresh one here:

Last time on NAU:  Imaginary Threat...

Avatar demanded from the NAU alarmists what the plan was for replacing the US government.  Hostilities flare as ScottyDog sought to associate The Avatar with "GWB kool-aid drinkers".  The Avatar asserts that in order to claim the NAU's plan to make a single North American Government, you must have rationally thought through a plausible process which those in charge would take to make this happen.  If you assert this, but have no plausible explaination as to how, then you're just another cliche alarmist.  He has yet to get the word.  We pick up where we left off:  What process must take place in order to replace the governments of the US, Canada, and Mexico, without the public say-so?  Begin.