Immigration and Customs Enforcement increases the number of agents responsible for finding and deporting illegal immigrants with criminal records. Critics, including some within the agency, denounce the push as a political stunt.WASHINGTON — In an aggressive effort to boost deportations, U.S. Immigration and Customs Enforcement has begun to increase by nearly 25% the number of agents tasked with finding and deporting illegal immigrants with criminal records, pulling 150 officers from desks and backroom jobs to add extra fugitive search teams around the country.