The State of Yuma provides by statute, "No person may be awarded any state construction contract without agreeing to employ only citizens of the state and of the United States in performance of the contract."In evaluating the constitutionality of this state statute under the supremacy clause, which of the following would be most directly relevant?
The general unemployment rate in the nation. The treaties and immigration laws of the United States. The need of the state for this particular statute. The number of aliens currently residing in Yuma