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: Says his administration has made progress on border enforcement by putting more boots on the southern border than at any time in our history and reducing illegal crossings to their lowest levels in 40 years.

immigration