MEXICO CITY (Reuters) - Mexican Foreign Minister Marcelo Ebrard on Tuesday defended his role in building a metro rail during his time as Mexico City mayor, a day after officials ordered 10 people and companies to face charges for the line's deadly collapse. The Mexico City Attorney General's office on Monday said it would present charges for homicide, injuries and property damage tied to the May accident, which killed 26 people. Ebrard, who oversaw the project while serving as mayor between 2006 and 2012, has repeatedly rejected the notion of any wrongdoing in the line's construction, which wa...