That’s all false. For one thing, the states in the USA joined together because they were all one people; for another, the original Washington DC central government was nothing like Brussels’ authoritarian central government and actually guaranteed things like natural rights and separation of powers. The vast majority of EU citizens want to be separate from the EU and have their independence back; the EU is a project of the elites, by the elites and for the elites, with every step progressing towards totalitarianism (Barroso openly confessed that the EU is an “empire” six years ago, and the EU took away the privilege of habeas corpus five years ago by allowing trials in absence; there are lots of others).
The USA did not become a world power until the twentieth century. Before that, they were not seeking such a status, rather having it foisted on them. The EU openly proclaims its ambitions to be a world power, in opposition to the USA, and is a champion of the social market economy.
I am afraid you do not understand what Ireland lost, and that “farm forever” talk is insulting to the people who lost their lives to allow Ireland to become independent, by stereotyping them.
The US was hardly “one people”, from the French in Vermont to the Dutch in NJ/NY to the Germans in Pennsylvania to the “English” along the coast. They were in the same boat (too small to be relevant on their own), and they chose the same course.
1/4 of Ireland never gained there independence anyway, and the rest chose “European” masters instead of “English” ones. The US is giving away its sovereignity to Mexico and Canada (and the UN); we shouldn’t be throwing stones.