TOPEKA, Kan. (AP) — As consumers worry about medication costs, states are trying to lower drug prices by reining in big companies that oversee prescription coverage for health insurers. Some of those companies, called pharmacy benefit managers, also own pharmacies, and one of them, CVS, has spent millions of dollars fighting the regulations. Affordability is a key issue ahead of this year’s midterm elections. Legislators in at least a dozen states passed laws this year to limit compensation to