SAN DIEGO (AP) - Thirteen government agents pile into unmarked sport utility vehicles and dark sedans in the basement garage of downtown's federal building. Their assignment: Crash the homes of 16 illegal immigrants and deport them. It is an increasingly common scene across the nation. The federal government wants to catch the nearly half-million immigrants who either have ducked deportation orders or are targets for removal because they were convicted of a crime. The size and complexity of the mission is staggering. Even as the government pours millions into enforcement, each year the number of new fugitives far exceeds the...