If the DHS cannot rule, the appeal may be referred in writing to the Chief Privacy Officer, Department of Homeland Security, Washington, DC 20528. He/she will review the situation and endeavour to settle the dispute. An appeal may be lodged with the data protection authorities in your country. For addresses, click here. The Chief Privacy Officer has committed to handling complaints received from the data protection authorities of European Union Member States on behalf of EU residents, to the extent that the person concerned has allowed those authorities to act on his/her behalf.