Earlier this year a report from the Center for Immigration Studies showed the Obama administration released 68,000 criminal illegal aliens onto the streets of the United States. Many of those released have criminal records of armed robbery, assault, rape and homicide.
Check this out:

-In 2013, ICE targeted only 195,000, or 25 percent, out of 722,000 potentially deportable aliens they encountered. Most of these aliens came to ICE’s attention after incarceration for a local arrest.
-ICE released 68,000 criminal aliens in 2013, or 35 percent of the criminal aliens encountered by officers. The vast majority of these releases occurred because of the Obama administration’s prosecutorial discretion policies, not because the aliens were not deportable.