Who should prosecute the El Paso Walmart shooting suspect? A year after the massacre, local and federal prosecutors still face hard decisions

EL PASO — When El Pasoans mark the one-year anniversary of the Walmart shooting Monday, attorney Yvonne Rosales will be one of hundreds of thousands of border residents reflecting on the tragedy afflicted on this city that claimed the lives of 23 people.

But after the candlelight vigils dim, Rosales will be right back at the task she’s been preparing for since she was confirmed as the county’s incoming district attorney — how to take over an office that could prosecute the man authorities say is responsible for one of...