sentences:  Although its role and significance has changed over the history of Chile, as well as its position and relations with other actors in the national political organization, it is one of the most prominent political figures.It is also considered as one of the institutions that make up the "Historic Constitution of Chile", and is essential to the country's political stability.Under the current Constitution (adopted in 1980), the President serves a four-year term, with immediate re-election being prohibited.