Huge Corruption In Denver Re: Illegal Alien Costs...Colorado employs, houses, feeds, educates and medically cares for an estimated 250,000 to 300,000 illegal aliens and their children. (Sources:www.fairus.org , www.cairco.org) Why? Answer: elected officials at the state and federal levels refuse to enforce immigration work laws. That includes Governor John Hickenlooper, Senators Mark Udall, Michael Bennett and U.S. House members from Colorado. Therefore, illegal employers enjoy immunity from internal enforcement. Colorado features several "Sanctuary Policy" cities whereby city councils such as Denver, Boulder and Colorado Springs have voted to give immunity from discovering "immigration status" when caught by police.