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

The FBI launched an investigation into claims that Judge Hannah Dugan helped an illegal immigrant evade ICE officers by misdirecting them.