Or click this link to view the U.S. Constitution and several other nation's constitutions, etc. Article I. Places legislative power in a Congress composed of a Senate and House of Representatives, prescribes method of electing Congress, and empowers each house to establish its own procedural rules. Process of legislation from Congress to President is generally described. Section VIII grants Congress specific powers, e.g., to declare war. Section IX limits Congress's powers, forbidding, e.g., ex post facto laws.
Section X limits powers of states and makes some states action dependent on Congressional consent.
Section III governs President's working relations with Congress and grants President administrative power. Section IV governs impeachment of a President. Congress may establish inferior courts. Section II defines the extent of federal jurisdiction and distinguishes cases in which federal jurisdiction is original, e.g., cases between states, from those in which federal courts can hear only appeals. Governs relations between states, prescribing full faith and credit for one another's laws, equal treatment of citizens of all states, and extradition procedures.