When the INS was single department, you had some what more efficient transfer of information, BUT, depending on which month it was, we had to divert budget from enforcement to services. When we arrest folks, we have to pay for feeding and housing and transporting them back overseas. When you give them a card, its much cheaper. Soooo, what are the Directors priorities this month? Budget shortfalls? Stop arresting...
The Ideal behind splitting the agency and having enforcement with ICE/HSI, and services with CIS, was to streamline the missions without conflict. And it is separate, AND still filled with conflicting missions. Gotta love working for the "G".