 Stay with C-SPAN as we take your calls and get your reaction to the first debate of this presidential campaign season. Again, it all starts live at 8 p.m. Eastern time tomorrow here on C-SPAN Radio, C-SPAN 2, C-SPAN Now, or also online at c-span.org. Homeland Security Secretary Alejandro Mayorkas talked to the media about border security. He spoke from Tucson, Arizona.