your pathetic police state will never compete.
There are currently 50 states in the union. Each has its own constitution. A few such as New Jersey and Massachusetts may be moving in the direction of a police state in the sense that loyal authorities are no longer armed as civilians. However, I haven't had time to look into this subject too deeply and verify the details.
Here is what Canadians would be giving up in joining the union.
Article 1 Section 10 - US Constitution
No State shall enter into any Treaty, Alliance, or Confederation; grant Letters of Marque and Reprisal; coin Money; emit Bills of Credit; make any Thing but gold and silver Coin a Tender in Payment of Debts; pass any Bill of Attainder, ex post facto Law, or Law impairing the Obligation of Contracts, or grant any Title of Nobility.No State shall, without the Consent of the Congress, lay any Imposts or Duties on Imports or Exports, except what may be absolutely necessary for executing it’s inspection Laws: and the net Produce of all Duties and Imposts, laid by any State on Imports or Exports, shall be for the Use of the Treasury of the United States; and all such Laws shall be subject to the Revision and Controul of the Congress. No State shall, without the Consent of Congress, lay any Duty of Tonnage, keep Troops, or Ships of War in time of Peace, enter into any Agreement or Compact with another State, or with a foreign Power, or engage in War, unless actually invaded, or in such imminent Danger as will not admit of delay.
Basically, the economic prospects would likely improve and they would have less trade disputes. They can keep all their superior policies, and in abolishing the Canadian government, their states would have closer representation, but would no longer get to mooch off the unprecedented military might of the US. Prospectively, the traditional provinces may or may not be redrawn. Off hand I guess the senate might get a boost in republicans, and the house would get a boost in democrats. The Canadian population is only 36 million, a bit more than 1/10th the US population, and most of them live near the US boarder.
Plus, they wouldn't be able to say "We're not American" and whatever they have going on with the Monarchy would have to be a more personal affair.
Article 1 - Section 9
The Migration or Importation of such Persons as any of the States now existing shall think proper to admit, shall not be prohibited by the Congress prior to the Year one thousand eight hundred and eight, but a Tax or duty may be imposed on such Importation, not exceeding ten dollars for each Person.The Privilege of the Writ of Habeas Corpus shall not be suspended, unless when in Cases of Rebellion or Invasion the public Safety may require it.