It goes without saying: You must be a U.S. citizen to vote in U.S. elections. Even so, the idea of proving your citizenship has been hotly contested.

Proponents say it's crucial to prevent non-citizens from voting in U.S. elections. Opponents say that this creates roadblocks that disenfranchise voters.

In Arizona, the Legislature sought to reinstate a state law requiring residents to provide proof of citizenship to register to vote. The U.S. Supreme Court ruled in favor of the state Republicans' request on Aug. 22. The request is also backed by the Republican National Committee.

However, the court turned down a request to reinstate the portion of the same law that would bar federal-only voters from participating in federal elections.

So what does this all mean?

In this episode of The Gaggle's monthly series, Election Dissection, hosts Mary Jo Pitzl and Sasha Hupka explain the law and explain who's effected by it.

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