A Customs Power of Attorney is a legal document authorizing any customs broker whose services you use in order for them to handle your customs transactions. This is true whether you are out of the country or not. You may also need to give a power of attorney to someone overseas who can then conduct business transactions in your absence. When you set up a power of attorney, make it broad enough in its language to cover the types of situations likely to arise while you are away. It should not be so broad, however, that it gives more power to that individual than you intend.