Wouldn't allow DHS to single-handedly override federal laws A bill introduced in Congress would overturn the ability of the Department of Homeland Security to override as many as 35 federal laws to allow the agency to build fences and physical barriers along the United States-Mexico border. A similar bill was introduced in 2007 by U.S. Rep. Raul Grijalva, D-Ariz., who along with nine co-sponsors introduced the latest proposed legislation. The purpose of the Border Security and Responsibility Act of 2009 is to provide “the highest protection possible from the effects of unauthorized immigration, human and drug smuggling, and border enforcement...