ICE agents conducted at least one immigration raid on Thursday, detaining workers at a Newark, New Jersey, business. The group included U.S. citizens and a military veteran ¡ª all without a warrant.

The raid by federal officials of the Immigration, Customs and Enforcement agency prompted outrage among New Jersey officials. Newark Mayor Ras Baraka called it an ¡°egregious¡± violation of Fourth Amendment rights against ¡°unreasonable search and seizure¡± and vowed that Newark will not ¡°stand by idly while people are being unlawfully terrorized.¡±

It¡¯s a preview of the brewing showdown between President Donald Trump¡¯s Justice Department and state and local officials over mass deportations. The consequences could shatter federal and state relations.