The problem there is the propensity for foreigners, well-educated in the back-assward ways of their country of origin, to come to America, ostensibly to partake in our, in some way measurably superior economy and culture, then expect to introduce their back-asswards ways here and expect those ways to be successful, then when they find out we think their entire country is as back-asswards as they are and refuse to put up with it, perhaps through inducing some event they might find traumatic like a firing, arrest, restraining order, and so forth, they want laws made to make everyone here back-asswards, because it's easier for them.
When your immigration laws have a high standard of entry and you tell people, even en masse, "we lowered on this item this one time", then our expectations are stated and that creates the viewpoint that they need to assume their ways might be back-asswards. When immigration laws are as lax as ours, who can blame foreigners for being obstinate about coming here an us not adopting to their expectations? After all, when you give them welfare, you're paying them to do as such.
You need to have a system in place to appropriately assess and adopt new cultural norms. Frankly, racism and bigotry has proven to do this nicely, although if you have suggestions on how we might do it better I'm all ears. Removing racism and bigotry, on the other hand, well that has had some seriously detrimental effects on our society.
Right now, you've got 5% to 15% of the population in the US living here without seeking citizenship, and this is causing a demographic shift. The indigenous population, through feminism and marxist ideology, is being set up for a fall; look at marriage rates and the resulting reproduction rates of whites and blacks. They know it, and they've quite clearly voiced their intent to take the moral high ground and resolve those issues in a peaceful manner through civil means like deportations.
If America really went Nazi Germany, we'd carpet nuke China and India, then tell the rest of the world "we solved the carbon emissions problem!". Then we'd invade Mexico, flatten the country, and promptly announce "THE WAR ON DRUGS IS WON!" and nuke Mecca pronouncing "ISLAMIC TERRORISM SOLVED" and other such nonsense. Really, what we're doing is very civilized. The foreigners even know there's plenty of time to propose a mutually beneficial solution, or simply leave on their own accord, before they're forced to leave.
Obviously, the foreigners that are here are not happy with the situation they and their back-asswards ways have placed them into. Frankly, a lot of people here feel as though foreigners are coming here instead of fixing problems in their own countries. Mexicans voted for Trump because they can clearly see, now 2nd and 3rd generation immigrants, how messed up Mexico is.
Now you continue to fan the flames of cultural warfare, and say things like "we're going to out-breed whitey" or simply repeat the same high-and-mighty drivel the American media monopoly has pushed out for the last several decades. That pushes things towards not being civilized and creates incentives for biblical extermination events. Nobody views that as reasonable right now, but if people act like cock roaches, then there's only one way to reasonably handle that situation. I'd really like to think we're beyond that one as a world, but in 2017, there's still mass graves and still stupidity going on. We need a fresh take on the entire discussion, one that provides dignity for all parties.
And you can talk about "borders are imaginary lines" all you want; everyone in IT has this mightier-than-thou notion, still high off of the 80's "I HAS A MODEM AND CAN TALK TO JAPAN, I'M SO CLASSY, ENTIRE WORLD IS HUMAN, KUMBIYAH" stupidity, they fail to see the point of borders. Fact is, there are irreconcilable differences in culture, language, religion, beliefs and economies and it's an extraordinarily good thing that these borders exist. We get a bunch of little social experiments that sometimes take decades to play out fully. Some experiments are extremely successful like America. Others countries, well, not so much. And there are reasons for that; technology can gloss over a lot of societal problems, e.g. the availability of hard liquor in the late 1800's. Globalism has largely been used to institute wage arbitrage, not the uplift the world as a whole, and you need to live in a bubble with a head full of cognitive pollution not to see that clearly.