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Falvey Staff Members Work Together to ‘Change the Subject’ on the Term ‘Illegal Aliens’  

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By Deborah Bishov and Shawn Proctor  

Imagine searching the library catalog for books such as Migrant Deaths in the Arizona Desert and Whose Child am I?: Unaccompanied, Undocumented Children in U.S. Immigration Custody—and seeing the term “illegal aliens” appear on the results screen. Library users everywhere have encountered that term for many years, as it has long been the official Library of Congress subject heading assigned to books and other materials on the topic of immigrants who are undocumented. 

Users of Falvey Memorial Library’s catalog no longer encounter this pejorative subject heading in the public display, due to changes made by Falvey staff this past fall. Instead of the term “illegal aliens,” the Falvey catalog now displays “undocumented immigrants” as a subject heading term.

The changes affect variations on the subject heading as well; for example, “children of undocumented immigrants” now appears instead of “children of illegal aliens.” All instances when “alien” referred to a human being have been changed. 

Falvey staff members recognize that terms like “illegal alien” are not in alignment with Falvey’s or Villanova’s support of diversity as an integral component of our shared mission and values. This change to the library catalog is a reflection of Villanova as a welcoming community. We hope that it is also a step toward a respectful, globally-minded society. 

How do subject headings work? 

Falvey Memorial Library, like most academic and public libraries, uses Library of Congress subject headings to organize materials and make them discoverable to users. This cooperative system allows libraries to share resources. Subject headings are set by the Library of Congress, and, in general, changes to subject headings go through a process of approval there.   

Librarians and college students lobbied several years ago to have the “illegal aliens” subject heading replaced with other terms in all library catalogs, and the change was approved by the Library of Congress in 2016. This decision was widely supported by the library community. The 114th Congress intervened and overturned the decision before it could be implemented.

Why change the catalog, and why now?   

The timing was inspired in part by the 2019 documentary Change the Subject. This film shares the story of a group of student activists at Dartmouth College who began the movement for change. The Villanova community had the opportunity to view the film at a screening this fall, organized by Deborah Bishov, Social Sciences & Instructional Design Librarian, and Raúl Diego Rivera Hernández, PhD, Assistant Professor in the Department of Romance Languages and Literatures. The event featured a discussion with two of the filmmakers behind Change the Subject, Jill Baron and Óscar Rubén Cornejo Cásares.   

During conversations leading up to the screening, Falvey librarians—with the approval of Millicent Gaskell, University Librarian, and Jee Davis, Associate University Librarian for Collections & Stewardship—made the decision to change the subject in Falvey’s catalog.  

“Libraries use the subject headings established by the Library of Congress. The process for requesting a subject heading change was followed and the Library of Congress approved. In an unprecedented move, Congress overrode that decision. It’s been almost four years since the Library of Congress gave its approval. We believe now is the time for individual libraries to take the lead,” Davis says.

How did Falvey’s information technology infrastructure enable this change?    

Since the Library of Congress is still using “illegal aliens” in its shared catalogue, Falvey staff created code to display “undocumented immigrants” instead. Demian Katz, Director of Library Technology, worked with librarians at Falvey to alter the subject headings in VuFind, an open-source software for displaying the information in library catalogs. It was developed at Villanova University and is used by libraries around the world.  

One of the advantages of using open source software at Falvey is that staff can make customizations more easily than if they had to negotiate with a vendor to achieve the same results. Katz says, “In this instance, it only took a few hours of work spread across a few days to fully solve the technical problems involved.” While only the new subject headings appear in our public catalog, the old subject headings are still searchable.   

Libraries using VuFind can implement the same solution using the documentation on the Library’s technology blog. The Villanova University Charles Widger School of Law has already implemented this update into their catalog.   

“This change is about upholding our professional values to connect people to information and recognizing the power of the language we use as we do that,” Bishov says. “Making this change means that people who use our public catalog will not encounter this dehumanizing term in subject headings in the course of doing their research. And we’ll also be using terminology that matches language widely accepted by the people to whom it refers, by journalists, and by scholars.”

headshot of Deborah Bishov

Shawn Proctor

Deborah Bishov is Social Sciences & Instructional Design Librarian and Shawn Proctor is Communication & Marketing Program Manager at Falvey Memorial Library.

1 People Like This Post


  1. Comment by Steven — January 14, 2020 @ 12:44 PM

    This does more harm than good in that it does not adequately communicate the nuance of the subject matter. A better solution would be as follows:

    See also: Extraterrestrials
    Narrower Term: Illegal aliens
    Narrower Term: Immigrants
    Illegal aliens
    Broader term: Aliens
    Narrower term: Illegal immigrants
    Illegal immigrants
    Broader term: Illegal aliens
    Broader Term: Aliens
    Narrower Term: Illegal Immigrants

    This works better because there is not a 1:1 correlation between “aliens” and “immigrants”. All immigrants are aliens but not all aliens are immigrants.

    If your user group finds the term “illegal” to be an offensive term, I would suggest the term “unauthorized” instead. “Undocumented” is problematic because a foreigner who is in a host nation illegally could very well have documentation that verifies their identity (i.e., a passport). The question is not whether the foreigner has documentation but rather whether they have authorization to be within the host nation.

    Also, if your user group finds the term “alien” to be an offensive term, then I would suggest “foreigner” instead. “Foreigner” has the added benefit of not having the potential to be confused with a subject heading about Vulcans and Klingons.

    So an alternative could be:

    Narrower Term: Unauthorized foreigners
    Narrower Term: Immigrants
    Broader Term: Foreigners
    Narrower Term: Unauthorized immigrants
    Unauthorized foreigners
    Broader term: Foreigners
    Narrower term: Unauthorized immigrants
    Unauthorized immigrants
    Broader term: Immigrants
    Broader term: Unauthorized foreigners

    Regardless of what terminology you decide to use, it is important that: (a) the terminology accurately describes the concepts (your new terminology does not); (b) you have the proper semantic structure between the various subject terms so that users can navigate the ontology (the LCSH actually does fall short in this regard as it does not provide a subject heading for “Illegal immigrants” that properly differentiates the concept from “Illegal aliens”); and (c) you retain the old terms as non-preferred terms in the authority records for the new terms so that users who would search for “illegal aliens” would be directed to “unauthorized foreigners”.

  2. Comment by Jean Lutes — February 6, 2020 @ 6:20 AM

    I’m so proud of our library for taking this step.

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Last Modified: January 13, 2020

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