That is the result of the great Constitutional Revolution. [...] The Revolution found the rights of the individual at the mercy of the States; it rescued them from their arbitrary discretion, and placed them under the shield of National protection. It made the liberty and rights of every citizen in every State a matter of National concern. Out of a Republic of arbitrary local organizations it made a Republic of equal citizens—citizens exercising the right of self-government under and through the States, but as to their rights as citizens not subject to the arbitrary will of the States. It grafted upon the Constitution of the United States the guarantee of National citizenship; and it empowered Congress, as the organ of the National will, to enforce that guarantee by National legislation. (en)