The Acting Secretary of State to President Wilson
My Dear Mr. President: I beg to enclose herewith for signature by you, should it meet with your approval, the draft of a proclamation32 prohibiting the shipment of arms and ammunition from the United States into Mexico.
The present proclamation differs somewhat from the one issued on October 19, 1915,33 in that it applies to the whole of Mexico and gives specific authority for United States military authorities to assist in its enforcement. This latter change is urged by the Secretary of War.
I have added a final paragraph to the proclamation, with the view to economize your time in the matter of making numerous exceptions to the provisions of the proposed embargo, and in order that the Department may have full authority in the handling of shipments of explosives for industrial and other purposes in Mexico. I may add that this draft has been approved by the Attorney General and by the Secretary of War, and that the latter has repeatedly asked that the proclamation be issued at an early date.
Inasmuch as the War Trade Board has relinquished its control over shipments of munitions to Mexico, and in view of the renewed activities of Villistas in the State of Chihuahua, and because of the receipt by the Department of a number of reports to the effect that munitions of war are being smuggled across the border for use by Villistas in Chihuahua and Yaqui Indians in Sonora, I strongly recommend that the proclamation be issued without delay.