A U.S. trade group is complaining about an Asian country’s efforts to rein in its rising health care costs.

The Korean Ministry of Health and Welfare wants to discourage Koreans from using unnecessary health care by prohibiting private insurers from covering national health care system co-payments.

The American Council of Life Insurers, Washington, says the ministry should have consulted more with domestic and foreign stakeholders before deciding to ban use of supplemental medical insurance.

About 12 million Koreans now have private supplemental medical insurance, according to the ACLI.

“The MHW proposal is troubling not only to foreign but also Korean domestic insurance companies on many levels,” ACLI President Frank Keating says in a statement.

Implementing the ban on supplemental medical insurance may clash with the commitments Korea has made to the World Trade Organization, the ACLI says.