Find More Paradoxes

Maverick Philosopher (seen via Fourth Checkraise) is asking for more paradoxes of illegal immigration. I have a few:

• The Paradox of Partial Globalization. Why would allowing imports be good when for the products of human labor but not for the humans themselves?
• The Paradox of Part-Time Libertarianism. Why are competition-reducing regulations bad when the competitors were born in the right place but good when the competitors were born on the other side of an imaginary line?
• The Paradox of Part-Time Opposition to Malthusian Theories. Why is increasing the population good when the new people come from the womb but not when they come from the boat?

In short, why are the mainstreams of both the right and the left on the wrong sides of this issue?