The Senate (Le Sénat) of the Republic is the upper house of the Haitian Parliament commonly called the Grand Corps. It was established by the Constitution of 1806 which gave him the status of a powerful body appropriating some executive powers. The president is reduced to a mere servant. This appropriation may explain Henri Christophe's decision not to accept the presidential nomination in the words of the constitution of 1806. History tells us that the first Senate was composed of 24 members. According to the 1987 constitution in force, the Senate is a body composed of members elected by direct suffrage by the citizens and charged with exercising on their behalf, together with the Chamber of Deputies, the powers of the legislative branch. It has 30 councilors, three geographic department. The constitution establishes the terms of senators says the different responsibilities of the Senate, defines the conditions to be elected senator and noted that the Senate permanently. The rules this structure, the organization of the Grand Corps and the daily activities of the Senator.