What do you think about the lack of rights legal, permanent non-citizen residents have?

I was just reading this article in the New York Times about a man who is a legal permanent resident of the United States and who could be deported because he was found with a joint in his pocket. Apparently drug laws are different and far stricter for immigrants, even if they are in the United States legally and permanently. How do you feel about this general lack of rights?

I am not asking about immigrants in general, just those who are here legally and permanently. Please do not make this a debate about how immigrants are treated.