Definition: In this task, you are given a statement spoken by a politician in natural language. Your task is to generate the subject of the discussion for the given statement. The subject generated is not necessarily a part of the given input. Your answer should contain one or more words.
Input: Since 2013 alone, the Obama administration has allowed 300,000 criminal aliens to return back into United States communities. These are individuals encountered or identified by (Immigration and Customs Enforcement), but who were not detained or processed for deportation because it wouldnt have been politically correct.

immigration