812.00/24402: Telegram
The Secretary of State to the Consul at Mexicali (Boyle)
Your July 28th, 4 P.M. Governor Cantu telegraphs Department18 for export permit on arms and munitions to enable him to face impending attack.
Inform him, orally and conclusively, that Department is not permitting arms and munitions to be shipped to either faction in Mexico at present. Remind him that this Government will not be able to disregard hostilities which may occur near international frontier, or firing across the line thereby placing American lives and property in jeopardy. Finally, impress upon him imperative necessity of protecting irrigation canals upon which very life of Imperial Valley depends, from intentional or accidental harm.