2006: Secure Fence Act
This act, signed into law by former President George W. Bush, authorized the construction of more than 700 miles of double-reinforecd fence to be built along the Mexican-American border, through the states of California, Arizona, New Mexico, and Texas in areas known to experience rates of illegal drug trafficking. This law also authroizes the increased militarization of the border, allowing for security cameras, satellites, and drones in order to halt illegal immigration. In 2018, researchers from Dartmouth and Stanford established that the fence did not deter illegal immigration, but did detrimentally effect the U.S. economy. [2]