Directs the department of social and health services and the health care authority to enter into data-sharing agreements with the appropriate agencies in the states of Oregon and Idaho to assure the valid Washington state residence of applicants for health care services in Washington. Such agreements shall include appropriate safeguards related to the confidentiality of the shared information.

Requires the department of social and health services and the health care authority to jointly report on the status of the data-sharing agreements to the appropriate committees of the legislature no later than November 30, 2007.