non-citizens, aka 'aliens' during wartime.
a Federalist-controlled Congress passed four laws, known collectively as the Alien and Sedition Acts. These laws raised the residency requirements for citizenship from 5 to 14 years, authorized the president to deport "aliens," and permitted their arrest, imprisonment, and deportation during wartime.
https://www.archives.gov/milestone-documents/alien-and-sedition-acts