The FBI has arrested a Milwaukee judge accused of helping a man evade immigration authorities. Friday's arrest escalates a clash between the Trump administration and local authorities over the president’s sweeping immigration crackdown.

The Wisconsin judge who was arrested by the FBI on Friday and accused of interfering in the arrest of an undocumented immigrant has a decadeslong history of advocating for the poor and vulnerable.

The arrest marks a significant escalation in the Trump administration's crackdown on immigration, as well as in its battles with judges across the country.