With more than 10 million undocumented citizens living in the United States and a limited amount of government funding budgeted to deport 400,000 of them, how do you determine who stays and who goes?

On this week's podcast, ProPublica senior reporter Marcus Stern discusses the Obama administration's shift in focus from returning all undocumented immigrants to deporting "the worst of the worst." Stern talks about the recent policy changes, why local law enforcement officials have been more involved in immigration issues and why Congress has been unable to enact comprehensive immigration reform.

Articles related to this podcast:

Administration Takes Steps That Will Reduce Deportation Risk for Many Undocumented Immigrants

Director John Morton Explains ICE's Priorities on Deportation

Obama Administration Considers Bypassing Congress on Immigration Reform