from, interstate commerce 198
General issue 198
Development of the apportionment rule 199
Unit rule 200
Apportioned property taxes 201
Apportioned gross receipts taxes 202
Franchise taxes 202
Gross receipts taxes, classes of 203
Multiple taxation test 204
Recent cases 206
Taxes on net income 208
Miscellaneous taxes affecting interstate commerce 209
Vessels 209
Airplanes 210
Motor vehicles 211
Public utilities: Regulatory charges 213
Dominance of Congress 214
McCarran Act: Regulation of insurance 214
Police power and foreign commerce 215
Origin of police power 215
State curbs on entry of foreigners 216
State quarantine laws 217
State game protection and foreign commerce 217
Police power and interstate commerce 217
General principles 217
State regulation of agencies of interstate commerce 220
Railway rate regulation 220
Adequate service regulations 221
Safety and other regulations 221
Invalid State regulations 222