My Great Great Grandmother refused to speak anything but Swedish.
She dropped over dead screaming it at her sons on the side of a road in Eastern Washington for losing the family fortune. Some town called Cleveland, WA.

My feeling's this: If you're in the country legally, you can speak Kingon for all I care, but dont expect me to subsidize it with my tax dollars.

If you're in the country illegally, you should be shot on sight as a smuggler and possible terrorist.

EDIT: If the businesses caught hiring illegals were seized by the government, or any other harsh enough measure to remove the profit gained by undercutting the legal labor pool, The illegal immigration into this nation would vanish over night. The come here becaause they are guaranteed employment by unscrupulous Employers that get a wink and a nod from Congress.