The Trump administration has not yet released concrete details to build a wall along the U.S.-Mexico border, but it already faces the first of what could be a litany of lawsuits against the president’s signature proposal. The Center for Biological Diversity, a Tucson-based conservation group, and U.S. Congressman Raul Grijalva, who represents a broad swath of the Arizona border, filed the suit on Wednesday in a Tucson federal court targeting the environmental and fiscal impact of building a nearly 2,000-mile border wall. …