Powers of Attorney in the United States are subject to the laws of individual states, so the document changes to conform to your particular state s laws. There is no overall federal law concerning Powers of Attorney, but there is a model Uniform Power of Attorney Act which many states have adopted, fully or partially.
Power of attorney, also referred to as a POA, is a legal document that allows a person (principal) to choose someone else (agent or attorney-in-fact) to represent their financial, medical, tax, vehicle, parental, or any other needs selected. The document does not need an attorney to create (although it is always advised that a person seek legal counsel) and after completion, depending on the State, signatures need to be witnessed by at least two (2) people or by a notary public (preferred).
You can name more than one attorney-in-fact if you believe that different people will better handle certain decisions or transactions. You may also name a fiduciary, such as an accountant, lawyer, or other professional as your attorney-in-fact if you wish.
A Medical Power of Attorney allows you to name your health agent, someone who will make health decisions for you if you cannot. Your health care agent will also ensure that your health care providers give you the care you wish to receive. You can also require that your health care agent communicate in any manner with you about any specific proposed health care. For example, you may still be able to communicate by blinking your eyes. Many states, however, combine a Living Will and Power of Attorney into one advance directive form.