WASHINGTON, Nov. 22 -- Sen. Michael Bennet, D-Colo., has introduced legislation (S. 8) to "amend title XVIII of the Social Security Act to establish a demonstration program to promote collaborative treatment of mental and physical health comorbidities under the Medicare program." The bill was introduced on Nov. 17. It was referred to the Senate Finance Committee. For more information, Sen. Michael Bennet, 261 Russell Senate Office Building, Washington, DC 20510; 202/224-5852; or in state at Ce  more