From this:

In an unprecedented move within the Department of Homeland Security, the detention and removal officers and agents responsible for and sworn to enforcing our nation's immigration laws issued an exhaustive, scathing letter simply titled "VOTE OF NO CONFIDENCE IN ICE DIRECTOR JOHN MORTON AND ODPP ASSISTANT DIRECTOR PHYLLIS COVEN" on June 11, 2010. The letter, acquired through sources, provides a litany of examples of how ICE's mission is being skewed towards supporting an unflinching goal of amnesty by refusing to allow agents to do their job; allowing criminal aliens to roam free; depleting resources for key enforcement initiatives that preceded this administration; and misrepresenting facts and programs, demeaning the extent of the criminal alien problem and geared to support amnesty.

PDF of the letter at the link.