It's an early skirmish in a year expected to be full of battles over the so-called contraceptive mandate in the Obamacare law.
The administration says the group is already exempt from the law, because their insurance is provided by Christian Brothers Services. As a church organization, it's excused from the law's requirements. The nuns have said they don't want to sign a waiver asking for an exemption.
"They need only self-certify that they are non-profit organizations that hold themselves out as religious and have religious objections to providing coverage for contraceptive services," the Department of Justice wrote in its response.
Read More: http://nbcnews.to/1lFnimJ
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.