These are the open criteria that allow England teams to draw in players from all over the shop, same for Ireland. Its no good changing the rules now that your nation is on the brink of collapse.

England is decadent, witless, mean-spirited, devoid of ideas, full of crap, and utterly dooooooomed.

You may have some celtic blood in your family tree, with the opportunity for a second passport in coming years. If that opportunity arises; take it!