<P> According to the 30th article of the Constitution of Mexico, there are two ways in which a person can acquire Mexican citizenship: by birth or by naturalization . </P> <P> The Mexican Constitution states that Mexicans Citizens by birth are: </P> <Ul> <Li> persons born in Mexican territory regardless of parents' nationality or immigration status in Mexico </Li> <Li> persons born abroad of a Mexican Citizen born in Mexico </Li> <Li> persons born to an individual after that person has become a naturalized citizen of Mexico </Li> <Li> individuals born on Mexican merchant - or Navy ships or Mexican - registered aircraft, regardless of parents' nationality </Li> <Li> children born to Mexican Diplomats or Ministry of Foreign Affairs Personnel working overseas </Li> </Ul> <Li> persons born in Mexican territory regardless of parents' nationality or immigration status in Mexico </Li>

What are the role of citizens in mexico