"It depends on the state itself to retain or abolish the principle of representation, because it depends on itself whether it will continue a member of the Union. To deny this right would be inconsistent with the principle on which all our political systems are founded, which is, that the people have in all cases, a right to determine how they will be governed. This right must be considered as an ingredient in the original composition of the general government, which, though not expressed, was mutually understood. . ."