Poor veggie sorting leads to outbreak

The largest outbreak of food borne illness in a decade for the United States may have been caused by poor vegetable sorting in Mexico. Neither Mexico or the United States have safety requirements for farms or processing plants. Even though many Mexican producers grow vegetables under strict sanitary procedures for exporting to the US, many don't, and it simply takes an online registration for any Mexican company to export produce to the US.
The US FDA only conducts spot check on less than 1% of all imports, leaving it up to grocery's and restaurants to check their already purchased goods to decide if their ok for use. Some Mexican producers hire private companies to check the producers own sanitation standards. Few groceries will only buy from producers who have done this, but there is no public record of the groceries who do. All of this makes it extremely hard for consumers to have any idea if the goods they are buying or eating have come from and if any sanitation was used in the process. It seems that at the very least public record of what groceries buy from inspected producers would give the consumer some background on the food and could avoid outbreaks like this.