If enforcement activity is increasing, why do we have fewer judges than two years ago, especially when the Justice Department promised to increase the numbers? A Syracuse University study found

In summary, TRAC's analysis found that there has been no actual
increase in the number of funded Immigration Judge positions since the
Attorney General's proposals were announced, although some temporary
positions that were first funded in 2006 prior to the Attorney
General's announcement were subsequently made permanent. In addition,
the EOIR acknowledges that as of July 2008 there are eight fewer
Immigration Judges employed than there were back in 2006 at the time
the Attorney General announced his plan for increased staffing. One
surprising reason the number of judges have declined is that as of July
5 the Justice Department had left 28 positions -- 11% of the immigration
bench -- unfilled.

The net result is that as the total number of matters handled by the
Immigration Courts has increased over the last decade, today's
Immigration Judges have less time to handle a case received by the
court than they did ten years ago.