You forgot the other con, "It is the duty and obligation of Americans to lift the boats of other nations". I have looked and I don't see that duty listed in the Constitution. I do see where we are to be protected from invaders of any type, peaceful or violent. They have played on the Christian American conscience and gullibility for decades much to their own harm. Now they have come for our standard of living, our blessings from God, our Constitutional Republic, and soon our Bill of Rights. It's time to send these scoundrels and snake oil salesmen packing.
If America continues to try to provide for the economic needs of the entire planet we are going to bankrupt ourselves and then we will be in no position to help ANYBODY... not even ourselves.