▁closing ▁end ors ement . ▁ ▁P ream ble ▁ ▁The ▁pre am ble ▁to ▁the ▁Constitution ▁serves ▁as ▁an ▁intro duct ory ▁statement ▁of ▁the ▁document ' s ▁fundamental ▁purposes ▁and ▁gu iding ▁principles . ▁It ▁neither ▁assign s ▁powers ▁to ▁the ▁federal ▁government , ▁nor ▁does ▁it ▁place ▁specific ▁limitations ▁on ▁government ▁action . ▁R ather , ▁it ▁sets ▁out ▁the ▁origin , ▁scope ▁and ▁purpose ▁of ▁the ▁Constitution . ▁Its ▁origin ▁and ▁authority ▁is ▁in ▁" We , ▁the ▁people ▁of ▁the ▁United ▁States ". ▁This ▁echo es ▁the ▁Dec laration ▁of ▁Independ ence . ▁" One ▁people " ▁dissol ved ▁their ▁connection ▁with ▁another , ▁and ▁assumed ▁among ▁the ▁powers ▁of ▁the ▁earth , ▁a ▁so ver eign ▁nation - state . ▁The ▁scope ▁of ▁the ▁Constitution ▁is ▁two fold . ▁First , ▁" to ▁form ▁a ▁more ▁perfect ▁Union " ▁than ▁had ▁previously ▁existed ▁in ▁the ▁" per pet ual ▁Union " ▁of ▁the ▁Articles ▁of ▁Confeder ation . ▁Second , ▁to ▁" secure ▁the ▁bless ings ▁of ▁liberty ", ▁which ▁were ▁to ▁be ▁enjoyed ▁by ▁not ▁only ▁the ▁first ▁generation , ▁but ▁for ▁all ▁who ▁came ▁after , ▁" our ▁poster ity ". ▁ ▁Article ▁One ▁Article ▁One ▁describes ▁the ▁Congress , ▁the ▁legisl ative ▁branch ▁of ▁the ▁federal ▁government . ▁Section ▁ 1 , ▁reads , ▁" All ▁legisl ative ▁powers ▁here in ▁granted ▁shall ▁be ▁v ested ▁in ▁a ▁Congress ▁of ▁the ▁United ▁States , ▁which ▁shall ▁consist ▁of ▁a ▁Senate ▁and ▁House ▁of ▁Representatives