So What Do They Mean By "Secure" the Border?

[Heywood]

Agreed, that day has not come - but today - we need immigrants, legal or illegal, to provide the necessary production of goods and services which fund (and in some cases comprise) our public services at all. We aren't losing billions in welfare to them - because they aren't eligible. We lose nothing, we gain everything - why isn't our immigration policy even more open than it currently is (especially if we want to be able to afford that new robot economy)?

It isn't more open because there is a perception that a flood of immigrants who are allowed to work will dilute the ability of the Americano to command a living wage. A closed boarder is just as racist as a minimum wage in my opinion(minimum wage in this country was implemented to keep Blacks and Orientals from underbidding whites in the labor market).