I agree with you. The effort needs to be applied at all levels. Citizenry, City, County, State, and Federal.
I don't know if you were speaking in general, but I do not blame the President OR local officials. I admire and respect the President. I approve of the majority of his decisions. I don't believe there was a malevolent intent at any level of government allowing illegal immigration to have developed to it's current state.
Has it been just negligence (at one or all levels)? Perhaps, but I don't know enough yet to make an informed decision or form a reliable opinion.
Some argue that it has been purposeful. It is pretty common to hear democratic analysts say that the demographics are making the country more democratic as they claim the Hispanic vote. Bill O'Reilly has reported on the policies of the Ford foundation designed to create an underclass which would support a socialist revolution.
The laws were changed in the 70's and we are seeing the cumulative results.