Law and legislation 451 Taxation 156 Tariff 130 Income tax 38 Social security 37 Excise tax 29 World War, 1914-1918 24 more ... Debts, Public 23 Foreign trade regulation 22 Unemployment insurance 19 Import quotas 16 Customs administration 14 Tax exemption 14 Commerce 13 Wine and wine making 13 Finance 12 Officials and employees 12 Foreign economic relations 11 Foreign trade promotion 11 Internal revenue law 11 Public welfare 10 Debts, External 9 Rates and tables 9 Salaries, etc 9 Veterans 9 Game-laws 8 Military pensions 8 Tariff on sugar 8 Tobacco 8 Appropriations and expenditures 7 less ...