U.S. officials arrested a Wisconsin judge on Friday and charged her with helping a man in her court evade immigration authorities in an escalating dispute between President Donald Trump's administration and local officials over immigration enforcement.

Protesters demonstrate outside an FBI office in Milwaukee on Saturday after agents arrested a county judge accused of helping a man evade immigration authorities.

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.