68-569, 626-627, 631-633, 636-637, 698, 702,
721-722, 724-739, 868, 916, 919, 966
Federal contractors, State taxation of, application of State laws to,
726, 730-732
Federal instrumentalities, securities, State tax exemption, 728-736
Meaning, interpretation, of, 721-722, 724-736
State laws enacted during insurrection, effect, 728

Naturalization:
Cancellation for fraud, residence abroad, 256-257
Powers of Congress as to, 254-259
Retroactive effect of, 258

Navigable Waters (_see also_ Flood Control; Hydroelectric Power;
Navigation; Vessels):
Defined, 577-578, 867-868
Regulatory powers of Congress, States as to, 126-132, 228-231
Riparian owners injured by improvement of, right to compensation,
867-869

Navigation (_see also_ Hydroelectric Power; Navigable Waters):
Instruments of, docks, ferries, etc., Federal regulation of, 128-130
Obstructions to, Federal restraint of, 126-128

Navy. _See_ Land, Air and Naval Forces.

Nazi Saboteurs, trial by military commission, 285-286, 401-402

"Necessary and Proper" Clause, 110, 121, 266-267, 307-311, 426-427

Negroes:
Citizenship of, 963-964
Home ownership, occupancy, public restrictions on, private covenants
prohibiting, validity, 1028, 1142, 1161
Right to vote, discriminatory devices denying, validity, 1163-1164,
1183-1186, 1208
Segregation in schools, conveyances, laws as to, validity, 1161-1163
Segregation, State powers as to interstate carriers, 225-226, 230

Nobility, titles of, not granted by United States, nor accepted by
public officers without consent of Congress, 324

O

Oaths, powers of Congress as to, 736

Obligation of Contracts. _See_ Contracts.

Officers of the United States. _See_ Public Officers of the United
States.

Oil (_see also_ Taxation: State):
Conservation, powers of States, 1025-1026
Damages from drilling, requiring bond to cover, 1026
Leases from United States, cancellation for fraud, 311
under Marginal belt along coast, powers of United States as to, 325,
700

"Okies", State curbs on entry, 242, 968

Oleomargarine (_see also_ Taxation):
State laws prohibiting, regulating sale of, 239-240, 1030, 1154

Original Package Doctrine (_see also_ Taxation: State):
Effect on State regulation of cigarettes, convict-made goods, liquors,
oleomargarine, etc., 236-241
Interstate and foreign commerce, relation to, 177-178, 180, 182-189,
194, 236-241, 362-363