Las Vegas police say Ensign was found slumped over the steering wheel of a car at the intersection of Buffalo Drive and Washington
Avenue after a number of citizens called emergency services.
Police say that when emergency help arrived, Ensign tried to run over two responders and slammed his vehicle into a fire truck.
Several of the medical responders suffered minor injuries.
A spokesman for the Nevada senator called the incident "private family matter," and said he had no further comment.
Information from: Las Vegas Review-Journal, http://www.lvrj.com
(Copyright 2007 by The Associated Press. All Rights Reserved.)