If you are age 50 or older, you should take special care when buying living trusts. Your age group is often a special target of salespersons whose goal is to sell you something without carefully analyzing you needs.
The quick answer is no. A person that holds a Power of Attorney from you cannot change your Will for you. A Power of Attorney gives the person you choose the power to make financial, medical and legal decisions for you if you become incapacitated.
If you have a Will, be sure to keep it updated when there are important changes in your life. Your Will should not be stored away and forgotten. Take it out and review it at least annually to be sure that it still works properly, especially if things have changed in your life.
The Estate Tax is a tax on your right to transfer property at your death. It consists of an accounting of everything you own or have certain interests in at the date of death.