Using that type of reasoning, we could make dealing illegal drugs legal, and no one will have any problem. Actually, I'm opposed to rewarding anyone for violating the law, whether they be foreigners in the country illegally or Americans dealing illegal drugs.
That would be true for people who say that the only reason crack is bad is because it's illegal, ie. "I'm love legal crack, it's only illegal that I'm against".
But the fact is that crack is intrinsically bad. It was bad before it was made illegal and it's bad after it was made illegal, and if some court strikes down the crack law it will still be bad.
But the anti-illegal immigrant crowd claims to adore legal immigrants but abhor illegal ones. The problem is that in the majority of cases they are the same person. A majority of illegals entered legally. One day a person is legal, the next day he is illegal, but intrinsically he is the same person.
If you can't tell whether you adore or abhor a person without researching his immigration file, you have different values than me.