http://www.allyoucanread.com/newspapers.asp?id=C75 or Google Mexican Newspapers

All major Mexican newspapers are listed here. Each has a contact button and a place to express opinion. Express your opinions about their President's remarks and meddling. Also, express your outrage about the invasion by their Citizens. This is a bully pulpit for us. Can not afford to overlook any action that could be helpful in this war. If every paper got letters from US citizens, this would at least get our President's attention. What fun! Ah, would his face be red.