Secure Fence Act and the REAL ID waiver (2005-2008)
Congress passed the Secure Fence Act of 2006 authorizing hundreds of miles of border fencing along the U.S.-Mexico border. The REAL ID Act of 2005 had given the DHS secretary power to waive environmental and other laws deemed necessary for expeditious barrier construction.
DHS Secretary Michael Chertoff used the waiver to bypass environmental review and other requirements, and courts upheld the authority as constitutional.
Hundreds of miles of fencing were built, and the waiver authority became the standard legal tool DHS used to fast-track border infrastructure in later administrations.
Cardone's injunction stays the modern version of this waiver authority, forcing DHS back into the environmental review process the Secure Fence Act era was designed to avoid.
