Why can't you have a driver's license if you have down syndrome?

People with Down syndrome CAN have a driver's license. Many people who live with Down Syndrome have a driver's license, and are perfectly fine drivers. Down Syndrome is not a disease, and people do not "suffer" from Down Syndrome. Down Syndrome does not prevent anybody from safely driving, going to college, owning a house, being married, having children, operating a business, or anything else.