The Congress of the Argentine Nation (Spanish: Congreso de la Nación Argentina) is the legislative branch of the government of Argentina. Its composition is bicameral, constituted by a 72-seat Senate and a 257-seat Chamber of Deputies. The Congressional Palace is located in Buenos Aires, at the western end of Avenida de Mayo (at the other end of which is located the Casa Rosada). The Kilometre Zero for all Argentine National Highways is marked on a milestone at the Congressional Plaza, next to the building.
The Argentine National Congress is bicameral, composed of the Senate and the Chamber of Deputies. The ordinary sessions span is from March 1 to November 30; the President of Argentina is entitled to convene extraordinary sessions during the recess, if needed. Senators and deputies enjoy parliamentary immunity during their mandates, which may be revoked by their peers if a senator or deputy is caught in flagrante, in the midst of committing a crime.
The Congress is in charge of setting taxes and customs, which must be uniform across the country. It rules the Central Bank of Argentina, manages internal and external debt payment, and the value of national currency (currently the Argentine peso). It rules the legal codes on Civil, Commercial, Penal, Minery, Work and Social Welfare affairs, all of which cannot be in contradiction with the respective provincial codes. Any changes on national or provincial limits, or the creation of new provinces, ought to be allowed by the Congress.
The Congress is entitled to approve or reject every international treaty that Argentina signs with other states or international organizations. When approved, the treaties acquire priority over ordinary legislation. Declarations of war and the signing of peace, as well as the mobilization of the national troops, within or without of the Argentine territory must be allowed by the Congress.