Section 1. Nature of legislative power: Page Doctrine of enumerated powers 71 Nondelegability of legislative power 73 Origin of doctrine 73 Functions which may be delegated 74 Power to supplement statutory provisions 74 Standards for administrative action 75 Rule-making power 76 Orders directed to particular persons 77 Delegation to private persons 78 Power to give effect to contingent legislation 79 Modification of tariff laws 79 Arms embargo 80 Internal affairs 80 Emergency statutes 81 Punishment of violations 82 Congressional investigations 82 Investigations in aid of legislation 82 Conduct of executive department 82 Private affairs 83 Purpose of inquiry 84 Judicial functions 85 Sanctions of the investigatory power 85 Contempt 85 Criminal prosecutions 85 Sections 2 and 3. House of Representatives and Senate: Qualifications of Members of Congress 87 Right to vote for Representatives and Congressional protection thereof 87 When the qualifications must be possessed 88 Enlargement of qualifications 88 Inability of States to enlarge 89 Census requirement 90 Section 4. Elections and meetings: Federal legislation under this clause 92 Legislature defined 93 Inequality of election districts 93 Congressional protection of the electoral process 94 Section 5. Powers and duties of the houses: Power to judge elections 95 Quorum to do business 96 Rules of procedure 96 Powers of the houses over members 97 Duty to keep a journal 98 Section 6.