The disastrous Citizenship USA project of 1996 was a luminous case of politics driving the INS to sacrifice enforcement to "benefits." When, in the early 1990s, the prospect of welfare reform drove immigrants to apply for citizenship in record numbers to preserve their welfare eligibility, the Clinton (awwk awwk) administration, seeing a political bonanza in hundreds of thousands of new welfare-dependent citizens, ordered the naturalization process radically expedited. Thanks to relentless administration pressure, processing errors in 1996 were 99 percent in New York and 90 percent in Los Angeles, and tens of thousands of aliens with criminal records, including for murder and armed robbery, were naturalized.

http://www.city-journal.org/html/14_1_the_illegal_alien.html