Several current and former law enforcement officials said an Obama-era investigation found some evidence that Ms. Omar had entered into a sham marriage with a man suspected of being her brother.
In states like Florida, officers who hand out fishing citations and inspect produce have been deputized by Immigration and Customs Enforcement, expanding the reach of President Trump’s deportation campaign.
A canal in Dania Beach, Fla., in September. The canal was the site of an encounter that led Florida Fish and Wildlife Conservation Commission officers to contact federal immigration authorities.