In the article you cited, judge Bolton points out that “there is a substantial likelihood that officers will wrongfully arrest legal resident aliens”.
I could easily see that happening. I read an article recently about Border authorities who wrongfully deported an American citizen. “He was carrying his American birth certificate, Social Security card and Texas ID.” He’s home after a 3 month fight, but I can only imagine that the number of cases like this would increase with SB 1070 type legislation.
These types of deportations have happened for years. One of the maintenance workers at my colleagues high school was stopped in Los Angeles and asked for papers. Although he showed the police his driver’s license, because he stuttered when he was nervous, he couldn’t answer and was taken to Tijuana where he was dropped off. It was days before the administration at the high school could convince the immigration authorities that the man was a US citizen and he could return home. Unfortunately, with today’s heated rhetoric and accusations, it will only get worse.