A Louisiana sheriff has admitted that his office requested federal immigration officials to search for undocumented workers among those cleaning up BP’s oil spill. In a statement to the magazine ColorLines, St. Bernard Parish Sheriff Jack Stephens said he was concerned about “illegal aliens” and “criminals” coming into the area “under the guise of doing legitimate work.” Last week, the journalism project Feet in Two Worlds revealed that immigration officials had visited two oil spill command centers to check the documents of workers.