It shall also be the duty of the Attorney General to likewise cooperate with such other attorneys general in making studies and examinations of all now pending or hereafter proposed congressional legislation to determine whether the same may result in federal encroachments into the normal field of state legislation or state functions, or whether same is harmful or beneficial to the interests of the state or its citizens, and to advise the Senators and Representatives in writing of his opinion and views with respect thereto, together with his reasons therefor; and to suggest any amendments to any such pending or proposed legislation which the Attorney General deems appropriate or necessary to protect the interests of the state and its citizens.