Border agent: 8 in 10 illegals released into US after capture

Someone tell me why we even bother with recognizable borders when illegal aliens can cross it with impunity and disappear?

The president of the National Border Patrol Council, Local 2455 says that his agents are hampered by a lack of resources and that executive orders and “prosecutorial discretion” forces the agency to release 8 of 10 illegals they catch coming over the border and release them on to US territory.