According to TRAC at http://trac.syr.edu/whatsnew/email.100614.html, immigration prosecutions are again on the rise. In March 2010 alone, there were 8,287 immigration prosecutions, which is a 30% increase and more than any month since July 2009.
TRAC offers free reports on enforcement activities of DHS and other federal agencies as well including IRS, FBI, etc