not unlike much of America, Colorado seems to have one set of laws for U.S. Citizens (US citizens!), and another set of laws for illegal aliens....
http://www.thedenverchannel.com/news/26959125/detail.html
Unlicensed Driver Cited In Accident, Keeps Driving
Police Say Accident Victim Could Be Charged For Following Unlicensed Driver To Prove She's Driving
