hints of "Poisoning Our Blood"...I pray that's not what you meant, given your own diverse family.
There's nothing "Fundamentally" wrong with immigration...with our phenomenal economy and freedoms vs the rest of the world, you can expect distressed people from everywhere at our borders...we just need the resources to process them...and accept only enough of those who are law-abiding and truly dedicated to making this their home, and swearing to protect it.
"Open Borders" is a meaningless political trope...uttered by those who don't really care about ensuring our borders are secure...or they would have passed needed legislation a long time ago. The evidence is there for all to see...and be reminded of...