If the basis for the violation lies in the Voting Rights Act, then the violation is of the Voting Rights Act and not the constitution. It sounds as if they were arguing that the Voting Rights Act is a part of the constitution.
Justice Anthony M. Kennedy, writing for the majority, said Hispanics do not have a chance to elect a candidate of their choosing under the plan.
Since when are "hispanics" considered a "race"? My next door neighbor is the hispanic son of aa former illegal alien and if they put the two of us up in a line up to pick out the "hispanic" there is no doubt that I would be the one picked. He's blond haired and blue eyed. I'm not. A large percentage of "hispanics" are of the caucasian race. A large percentage of "hispanics" are black. Being "hispanic" is not an immutable characteristic. It should not be a "protected class" any more than being from Maryland. It is simply a generalized geographical statement of heritage.
You're absolutely right. Hispanics are not a race of their own. My ancestors were from England and Ireland, theirs from Spain. 300 miles do not a race make. And if I was of French ancestry, then I would be white but a person descended from somebody on the other side of the mountain would be hispanic. Ridiculous.