Guinn v. United States(1915)
The so-called Grandfather Clause of the amendment to the constitution of Oklahoma of 1910 is void because it violates the Fifteenth Amendment to the Constitution of the United States.
The Grandfather Clause being unconstitutional, and not being separable from the remainder of the amendment to the constitution of Oklahoma of 1910, that amendment as a whole is invalid.
The Fifteenth Amendment does not, in a general sense, take from the States the power over suffrage possessed by the States from the beginning, but it does restrict the power of the United States or the States to abridge or deny the right of a citizen of the United States to vote on account of race, color or previous condition of servitude. While the Fifteenth Amendment gives no right of suffrage, as its command is self-executing, rights of suffrage may be enjoyed by reason of the striking out of discriminations against the exercise of the right.
A provision in a state constitution recurring to...
Edward White (Library of Congress)View Full Size