Original: 1915 & ndash ; The U.S. Supreme Court hands down its decision in Guinn v. United States 238 US 347 1915 , striking down an Oklahoma law denying the right to vote to some citizens .
Simplified: 1915 - The U.S. Supreme Court hands down decision in Guinn v. United States 238 US 347 1915 , striking down an Oklahoma law denying the right to vote to some citizens .