In the U.S. we are free to assume original arms, and may pass those arms to our children. We are also free to use the arms of our ancestors if it is appropriate under the accepted traditions of Heraldry. When using the arms of ancestors, we must respect our ancestor by adopting the arms in accordance with the traditions of the country in which the arms originated, following the long-held heraldic traditions of proper matriculation.
That being said, ancestral arms will not address an individual's recent history or interests. As an alternative, original, personal & meaningful arms can be designed and assumed in order to start a new heraldic legacy, passing those arms to descendants. Designing original arms gives the freedom to use heraldic symbology to indicate ancient as well as recent history. Newly designed arms can use elements of an ancestor who bears the same surname, or it can be designed to reflect unique characteristics that have a more personal meaning and value. Creating original arms allows us the freedom to tell our own story, our own way in heraldic terms.
Once an armorial has been designed, it can be registered as assumed arms here at the Society of American Armigers, or at any one of several available armorial registries.