Answer:
Residency requirements.
Explanation:
Age requirements: You have to be 18 or over to vote.
Voter ID laws: These laws must be followed for voting.
Citizenship status: You have to be a citizen of the USA.
Residency Requirements: There is no residency requirement, so you can live in another country and vote as long as you are 18 or older, a US citizen, and meet Voter ID laws.
