This is the first reference to a specific American Indian tribe I've heard since TOS's The Paradise Syndrome. That was when Spock identified the Natives as "a mixture of Navajo, Mohican, and Delaware, I believe." Of course, I haven't seen a lot of TNG.
StarTrek.com uses this isolated incident as evidence that not all of Earth's Native Americans have migrated to other planets.
Ships of the Delta Triangle--Volume II--U.S.S. Aliquippa
Hopi Class Vessel: Registry NCC-1458
Illustrations, History and Technical Data for the following:
U.S.S. Hopi Large Survey Vessel (Post 2282 Refit)
U.S.S. Aliquippa Large Survey Vessel (At Reported Date of Loss)
Ganymede Long-Range Research Shuttlecraft
Callisto Stellar Survey Shuttlecraft
Volume 02 in a series of ships originally seen in the Star Trek: The Animated Series episode The Time Trap.
Note that Aliquippa is also a Native name. Queen Aliquippa was a tribal leader in colonial America.
This is another example of how the trivial background starships get Native names while the main-screen starships get Western names. I discussed the previous example in Cherokee-Class Starships.
Chronology Of Written Star Trek Fiction
2371: Picard, Crusher and Data investigate ruins on the planet Equinox in the Cardassian Neutral Zone which are identical to those of the Hopi Indians on Earth. ("The Peacemakers," Strange New Worlds V)
Dragon Script Grail in DNA
For more on the subject, see The Indian-Star Trek Connection.