the stranger that dwelleth with you shall be unto you as one born among you

And if a stranger sojourn with thee in your land, ye shall not vex him.

But the stranger that dwelleth with you shall be unto you as one born among you, and thou shalt love him as thyself;
for ye were strangers in the land of Egypt: I am the LORD your God.

- Leviticus 19:33-34

photo from the L.A. Times: immigrants from Honduras and El Salvador who crossed the U.S.-Mexico border illegally are stopped in Granjeno, Texas. (Eric Gay / Associated Press)