Department of Homeland Security Secretary Janet Napolitano has requested that U.S. Immigration and Customs Enforcement (ICE) develop a strategy for how to provide “health care, sheltering” and other services to immigrants in the event of a significant increase in immigration to the United States.

“DHS Secretary Janet Napolitano, according to a statement by Immigration and Customs Enforcement, recently directed ICE to develop a national-level mass migration plan,” Government Services News reports. “The plan will outline how to address the health care, sheltering, processing, transition and disposition of large numbers of undocumented individuals who may arrive in the U.S. as the result of mass migration.”