House orders Library of Congress to maintain ‘illegal alien’

I bet there are many on RallyPoint with an opinion on this one.

Is "illegal alien" a pejorative

pe·jo·ra·tive
pəˈjôrədiv/
adjective
1.
expressing contempt or disapproval.
""permissiveness" is used almost universally as a pejorative term"
synonyms: disparaging, derogatory, denigratory, deprecatory, defamatory, slanderous, libelous, abusive, insulting, slighting; informalbitchy
"his remarks were considered too pejorative for daytime radio"
noun
1.
a word expressing contempt or disapproval.

Or is it merely an accurate description?

[Note to RP Admins: This is not about "immigration"]