Law and legislation 442 Taxation 153 Tariff 126 Income tax 39 Social security 36 Excise tax 30 World War, 1914-1918 23 more ... Debts, Public 22 Foreign trade regulation 22 Unemployment insurance 19 Import quotas 17 Customs administration 14 Tax exemption 14 Wine and wine making 13 Commerce 12 Finance 12 Internal revenue law 12 Officials and employees 12 Foreign trade promotion 10 Public welfare 10 Debts, External 9 Rates and tables 9 Salaries, etc 9 Tobacco 9 Liquor laws 8 Military pensions 8 Tariff on sugar 8 Veterans 8 Appropriations and expenditures 7 Game laws 7 less ...