The right of the state to authorize structures which might interfere with navigation is subordinate to the paramount control of the War Department of the United States; and the improvements contemplated by the legislation last described cannot be carried out without the consent of the Secretary of War. Proceedings looking to a grant of such consent were temporarily stayed by the remonstrance of Mayor Busse, and the appointment by him, under authority of the city council, of the Chicago Harbor Commission, which has made a comprehensive study and detailed report on the harbors of the city, together with recommendations as to harbor, railway terminal, and park plans along that part of the shore of Lake Michigan between Twelfth Street and Jackson Park. The report is entirely favorable to the essential features of the plan for park and boulevard development on the Lake Front, but with appropriate reservations for future harbor development. It strongly favors the accomplishment of such plans at the earliest possible moment, stating that “there is no real conflict between the harbor and the park interests of Chicago and no artificial or unnecessary discord should be permitted to retard the complete and prompt execution of the plans necessary for the development of both sides of the city’s life.” It recommends that “a detailed plan carrying out this idea should be worked out jointly by the experts of the park authorities and an expert engineer appointed by the city, subject to the approval of the city council and the South Park Commissioners,” and urges immediate action by these authorities. As soon as such a plan can be worked out and the consent of the War Department be secured, there is nothing but the question of ways and means to delay the execution of this plan. The legislature has already authorized the South Park board, upon obtaining authority from the people at an election, to issue bonds up to the constitutional limit for the construction of the Lake Front Park.[72] TRANSPORTATION PROBLEMS The readjustment of freight and passenger traffic and the relocation of railroad terminals is a subject which requires little comment from a legal point of view. When railway companies are brought to the point of hearty co-operation with the Chicago Plan, the powers which they already enjoy will be found adequate to the execution of their part. The state has placed at their service all necessary powers of eminent domain, and those portions of streets and alleys required for railway terminals may be vacated by the city. Although the action of the city council in vacating streets to make room for a railway station has been attacked, it has been sustained by the lower courts.