Protesters are chanting and marching outside the FBI on Saturday after agents arrested a Milwaukee judge accused of helping a man evade immigration authorities.

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.

The FBI arrested a county judge in Milwaukee on Friday, alleging that she obstructed the detention of an undocumented immigrant who was wanted by federal authorities, a senior law enforcement official told NBC News.