Oleomargarine and cigarettes 239 Demise of the original package doctrine 240 Curbs on the interstate movement of persons 241 State conservation and embargo measures 242 State conservation and embargo measures: The Milk Cases 244 State conservation and embargo measures: The Shrimp Cases 245 Concurrent federal and State legislation 246 General issue 246 Hepburn Act 246 Quarantine Cases 248 Recent cases sustaining State legislation 249 Recent cases nullifying State action 250 Federal versus State labor laws 251 Commerce with Indian Tribes 252 United States _v._ Kagama 252 Clause 4. Naturalization and bankruptcies 254 Naturalization and citizenship 254 Categories of naturalized persons 254 Who are eligible for naturalization 255 Procedure of naturalization 256 Rights of naturalized persons 257 Congress' power exclusive 258 Right of expatriation: Loss of citizenship 258 Exclusion of aliens 259 Bankruptcy 262 Persons who may be released from debt 262 Liberalization of relief granted 262 Constitutional limitations on the bankruptcy power 263 Power not exclusive 264 Constitutional status of State insolvency laws 264 Clauses 5 and 6. Fiscal and monetary powers of Congress 265 Coinage, weights, and measures 265 Punishment of counterfeiting 266 Borrowing power versus the fiscal power 266 Clause 7. Postal power 267 "Establish" 267 Powers to protect the mails 268 Antislavery and the mails 268 Power to prevent harmful use of the postal facilities 268 Exclusion power as an adjunct to other powers 269 State regulations affecting the mails 270 Clause 8. Copyrights and Patents 271 Scope of the power 271