1893

National Quarantine Act, following cholera epidemic, creates national system of quarantine regulations, specific procedures for medical inspection of immigrants and cargos, etc. to be administered by U.S. Marine Hospital Service, but with cooperation and consent of state and local health authorities. In deference to immigration restrictionists, it also gave U.S. President power in case of emergency to suspend all immigration on a temporary basis (a power that has never been invoked) (Markel, 173-182).