Your link clearly shows a failure on your part to understand the differences in "anti-illegal" immigration vs. anti-immigration.
Very few Americans want to close the door on immigrants. We just want immigrants to respect the laws of our nation. That way we can be reasonably sure they will become good citizens.
I live in Los Angeles and I would like to close the doors on immigration, illegal and legal. Until every American has seen what I see every day, there will continue to be a blase approach to immigration ... period.
For example, last Spring when the illegals had their "protest marches" there were LEGAL immigrants from other nations who also joined them, openly complaining about our government and our country. We DO NOT NEED these people. Don't we have more than enought enemies within this nation, as it is?