Memo lists possible border terror plot Officials play down plan described in secret FBI bulletin 11:03 PM CDT on Saturday, July 16, 2005 By ALFREDO CORCHADO and JASON TRAHAN / The Dallas Morning News Dirt roads trace pale lines across a desolate landscape of bald peaks and plunging canyons near Texas' Big Bend and bridge the border at dozens of improvised crossings. For decades, these routes have been used to smuggle drugs and humans. Now there is growing concern they could become deadly conduits for terrorism. The concern is buttressed by a confidential but unclassified FBI intelligence bulletin, obtained by...