Trump slams Colorado Gov. Jared Polis over handling of migrant gangs in Aurora: ‘He’s chickens—t’ New York Post Trump proposes ‘Operation Aurora,’ escalates migrant rhetoric at Colo. rally: 3 takeaways USA TODAYPolis blasts Trump over rhetoric: ‘Some say it’s cognitive decline’ The HillTrump intensifies nativist message with sweeping proposal to deport immigrants The Guardian USColorado governor disputes Trump’s claims about gangs in Aurora CNN