Library of Congress to decide on non-citizens?

Library of Congress agrees to drop illegal alien language.

"Thanks to the joint efforts of a student group and university librarians at Dartmouth College, Hanover, NH, with a push from the American Library Association (ALA), the Library of Congress (LC) announced on March 22 that it would remove the term “Illegal alien” from the LC Subject Heading (LCSH) system, replacing it with “Noncitizen” and, to describe the act of residing without authorization, “Unauthorized immigration.” Per LC’s executive summary, the proposed change will be posted on a “Tentative List” for comments “not earlier than May, 2016.”

Illegal means it is not legal.
Alien means someone who is not a citizen.

I don't see a problem with the current label. What say you?