Last week, Florida Gov. Ron DeSantis signed legislation and announced new actions related to immigration enforcement in the state. Among them is a policy that could impose a hefty financial burden on state taxpayers and reduce community trust toward police. S.B. 1808 requires each law enforcement agency in Florida that operates a county detention facility to enter into an agreement with Immigration and Customs Enforcement (ICE). Under a so-called 287(g) agreement, state and local law enforcement officers are deputized by the Department of Homeland Security to carry out duties typically performed by federal agents. Those officers may interview people about...