Call me young, naive and silly but I'm of the belief that laws should be uniformly enforced. The reality is that laws are often arbitrarily enforced, sometimes for political reasons and sometimes it's based on the temperature of some bureaucrat's coffee on a particular morning. I think that's insane.
Case and point: Immigration laws. The law says that entering the United States illegally is a crime. The reality is that if you are a Mexican and enter the United States illegally, you will practically have a welcome mat rolled out for you - with the wording in Spanish no less! You will get all sorts of government benefits that your own government wouldn't even dream of giving you.
Several major roads in the area where I live are absolutely covered in illegal aliens. Dozens, sometimes hundreds of them. They're not difficult to find. If the government wanted to, they could be picked up and deported in no time. In fact, I would have no problem offering my services for free, and call up ICE every time I saw one to help them with their efforts.
The thing is that the government has no interest in deporting illegal Mexicans. They don't care how many Mexicans cross the border every day. Instead, immigration laws are used against illegal immigrants from more developed countries - people who speak English and are literate enough to contribute more to the United States than they take in benefits. People from countries such as Israel.
The link above describes a vendetta by the United States government to deport Israelis who work at those mall kiosks everyone has seen. I hate those kiosks just as much as the next person - truly I do. The workers are pushy and annoying, and the products are worthless. That said, I would much rather have people who speak English and have jobs coming to the United States than illiterate Mexicans who cost us far more in emergency room bills, WIC and foodstamps than in any perceived benefit they provide through cheap labor.
So why are immigration laws selectively enforced? Politics, plain and simple. It's horrendous and it should be illegal. Either enforce a law or don't. But don't enforce it when it's convenient for you. That's just wrong.