Some people argue for anti-immigration from the point of illegality.
So what? That law is WRONG! It is wrong to block people from going somewhere on the planet they were born, it is wrong to ask for documentation when someone wants to move across an imaginary line. It is VERY WRONG, it is TOTALLY UNFAIR and it is UTTERLY UNJUST that it is illegal for certain people to travel to certain places just because they were born within a certain imaginary line drawn by a literally bloody or a metaphorically bloody politics.
Basing arguments on “illegality” is STUPID!
I would like to remind all such people that definition of "illegal" changes over time. Man-made laws are not like laws of nature. They're not written in stone or by a higher authority above mankind. There were many things that were legal once upon a time, which we cannot think of accepting today. (Like slavery, like women not having the vote...) And you can be sure there will be many illegal things today that the future generations will look upon horrified.