A federal judge ordered U.S. Immigration and Customs Enforcement on Tuesday to immediately train its Colorado employees about how to lawfully perform warrantless arrests, after the evidence showed officers had little understanding of the requirements. U.S. District Court Senior Judge R. Brooke Jackson wrote that ICE had “materially violated” his prior order that directed immigration employees to make and document their evaluations of flight risk when arresting people without warrants. “The PI could not have been clearer: for every warrantless arrest, the arresting officer must document in the I-213 (arrest report) that the arrest was executed without a warrant,” wrote Jackson in a May 12 order . “Despite this, not one of the 36 I-213s that have been produced pursuant to the PI Order complies with this mandate.” Consequently, Jackson required ICE to develop a “compliant training program” within 14 days. The agency must then train every immigration officer who makes warrantless arrests.…