The Department of Homeland Security plans to expand the files it collects on immigrants, as well as some citizens, by including more online data -- most notably search results and social media information -- about each individual. The plan is set out in the Federal Register, where the government publishes forthcoming regulations. A final version is set to go into effect on Oct. 18. Fortune reports: The plan, reported by BuzzFeed, is notable partly because it permits the government to amass information not only about recent immigrants, but also on green card holders and naturalized Americans as well. The proposal to collect social media data is set out in a part of the draft regulation that describes expanding the content of so-called "Alien Files," which serve as detailed profiles of individual immigrants, and are used by everyone from border agents to judges. Here is the relevant portion: "The Department of Homeland Security, therefore, is updating the [file process] to ... (5) expand the categories of records to include the following: country of nationality; country of residence; the USCIS Online Account Number; social media handles, aliases, associated identifiable information, and search results."