WASHINGTON, Dec. 15 -- Sen. Marsha Blackburn issued the following news release:

Today, U.S. Senator Marsha Blackburn (R-Tenn.) sent a letter CVS Health CEO David Joyner, pressing him on the company's lengthy record of fraud and regulatory violations at taxpayers' expense and the role the company has played in driving up health care costs. Pharmacy benefit managers (PBMs), such as CVS Caremark, wield extraordinary power over which drugs are covered by insurance and where patients can fill prescriptions.

Senator Blackburn has led the charge to rein in PBMs by introducing the Patients Before Middlemen (PBM) act earlier this year. This legislation would bring down the cost of prescription drugs by delinking the compensation of pharmacy benefi...