DHS Border Barrier Funding

The purpose of barriers on the U.S.-Mexico border has evolved over time. In the late 19th and early 20th centuries, fencing at the border was more for demarcation, or discouraging livestock from wandering over the border, rather than deterring smugglers or illegal migration. Physical barriers to deter migrants are a relatively new part of the border landscape, first being built in the 1990s in conjunction with counterdrug efforts. This phase of construction, extending into the 2000s, was largely driven by legislative initiatives. Specific authorization for border barriers was provided in 1996 in the Illegal Immigration Reform and Immigrant Responsibility Act (IIRIRA), and again in 2006 in the Secure Fence Act. These authorities were superseded by legislation included in the Consolidated Appropriations Act, 2008, which rewrote key provisions of IIRIRA and replaced most of the Secure Fence Act. The result of these initiatives was construction of more than 650 miles of barriers along the nearly 2,000-mile border. The Trump Administration has driven the second phase of construction of border barriers. On January 25, 2017, the Administration issued Executive Order 13767, Border Security and Immigration Enforcement Improvements. Section 2(a) of the E.O. indicates that it is the policy of the executive branch to secure the southern border of the United States through the immediate construction of a physical wall on the southern border, monitored and supported by adequate personnel so as to prevent illegal immigration, drug and human trafficking, and acts of terrorism. The debate over funding for and construction of a border wall system in this phase has created congressional interest in the historical context of border barrier funding. There has not been an authoritative compilation of data on the level of federal investment in border barriers over time.