The targeted federal immigration enforcement operation in Maine appeared to end how it started — with deep uncertainty. For the first few days of the surge, the presence of federal agents roaming the streets transformed blocks and parking lots into impromptu scenes of protest and sometimes aggressive arrests. Anecdotal sightings of federal agents had quieted down, but immigration advocates and public officials who had criticized federal agents’ tactics cautioned the public that federal enforcement would likely still continue as it had before the surge began. Sightings of federal agents have fallen since the weekend, however. He expressed wariness over believing Collins’ statement the Homeland Security Secretary Kristi Noem told her that immigration agents had wound down their activity in Maine.