Arpaio has denied the racial profiling allegations and has claimed that allowing a court monitor would nullify his authority.
Federal authorities said Wednesday they plan to sue an Arizona county sheriff and his office over allegations of civil rights violations, including the racial profiling of Hispanics.
The U.S. Justice Department has been seeking an agreement requiring sheriff Joe Arpaio office to train officers in how to make constitutional traffic stops, collect data on people arrested in traffic stops and reach out to Hispanics to assure them that the department is there to also protect them.
Arpaio has denied the racial profiling allegations and has claimed that allowing a court monitor would mean that every policy decision would have to be cleared through an observer and would nullify his authority.
Read more: Fox News