Why is Arizona Senate Bill 1070 a problem?

I have read thoroughly Arizona Senate Bill 1070 and guess what? I don’t see a word on racial profiling nor any other claims the Latino supporters are spewing. I do read if a person is stopped for speeding or some other violation of the law, they can be asked to produce a valid identification card. Why is Arizona Senate Bill 1070 a problem?

If one travels to a foreign country, is he or she not asked to produce valid identification? I am happy to produce my proper identification if asked by law enforcement. Why is this a problem for Latinos? You can bet if you travel to Mexico, you will be asked...