Originally Posted by
Toshbaf
What documents could show someone's domestic US travel from 2012? Let me start. Credit card statements
Card statements would only show a transaction to a company not what was bought and so it could be a US domestic flight or possibly an international one, or a domestic flight in another country (or with some airlines a hotel or something else). As per the other question, without knowing what you are trying to achieve its near impossible to answer.