The European experience with integration has resulted in a few countries showing the door to their illegal aliens who are not contributing to their society. With integration however comes a mingling of Dogma, and with such a mingling with the USA could mean a degradation of such. Unless of course one feels there are faults in our Dogma relative to other existing Dogmas.
"We hold these truths to be self-evident, that all men are created equal; that they are endowed by their Creator with inherent and inalienable rights; that among these, are life, liberty, and the pursuit of happiness; that to secure these rights, governments are instituted among men, deriving their just powers from the consent of the governed; that whenever any form of government becomes destructive of these ends, it is the right of the people to alter or abolish it, and to institute new government, laying its foundation on such principles, and organizing its powers in such form, as to them shall seem most likely to effect their safety and happiness."
Beyond that, what do you consider our Dogma?