BOSTON (AP) — Republican Gov. Charlie Baker is heading to Iowa for the National Governors Association summer meeting in Des Moines.

Baker is planning to join a Friday afternoon press conference about efforts by members of the association to combat the nation's growing opioid addiction problem.

After the press conference, Baker will take part in a session on the opioid problem with U.S. Secretary of Health and Human Services Sylvia Mathews Burwell and New Hampshire Gov. Maggie Hassan.

Baker was among at least 45 governors to sign a compact to fight opioid addiction committing to fighting the epidemic, fueled by the overprescribing of prescription pain relievers.

Baker said Wednesday the compact adds momentum to state-based solutions and "sends a clear signal to opioid prescribers and others whose leadership is critical to saving lives."