Because we are a nation of laws?
If all people are not subject to the same laws then you have protected classes.
This (and dozens of other things) will divide America and destroy it from the inside.
Many are already more equal then others. From politicians, the rich, and the famous
Then we have protection from laws because of color or culture or because you are poor and are just trying to improve life for you and yours.
Citizenship in the greatest country in the world is not to be taken so lightly. I could go on. That question might work in high school though.
Afterall if a mans family is starving then it should be permissable to steal a loaf of bread to feed them. When you get down to the LCD thats what it amounts to.