Yes part of, not entirely ruled by a federal govt. Don't like it, write your congress critters to have it changed. Until then, states/city police will remain to have the right to or not to enforce federal law.
Also, wouldn't enforcing federal law, be on the same lines as, doing someone elses job? I don't know about you, but I am not about to do someone elses job when I have my own job to tend to.




