Across a variety of indicators, the United States has substantially expanded border enforcement resources over the last three decades. Particularly since 2001, such increases include border security appropriations, personnel, fencing and infrastructure, and surveillance technology. In addition to increased resources, the USBP has implemented several strategies over the past several decades in an attempt to thwart illegal migration. Recently, the Obama Administration announced executive actions to "fix" the immigration system. These actions address numerous issues, including a security plan at the southern border.