From the American Mothers Inc. website:
American Mothers, Inc.® is committed to valuing mothers through service and education and has been MomStrong since 1935. As the official sponsor of Mother's Day and the Mother of the Year®, American Mothers continues the legacy of celebrating motherhood.
Each year American Mothers honors motherhood by naming the National Mother of the Year® and hosting the Mom to Mom Conference. As an Non Governmental Organization (NGO) centered at the United Nations and leader of the Global Motherhood Coalition, American Mothers organizes annual panel discussions and participates in high level meetings focused on addressing global struggles for mothers and families. By bringing mothers together from across the country, American Mothers organizes maternal energy for positive change.
You can check out their website for more information.