Actually, you're describing the current state of fraudulent voting in this country, whereby the votes are cast, the election is finalized, only to find out later, that the margin of error was exceeded by just enough illegal votes. It's the main reason Al Franken became senator. But the Feds do nothing when actual voter fraud is discovered, AFTER THE FACT, or in the case of the Black Panthers, voters are intimidated.
You're right, the Feds are useless. Best folks obtain a simple ID to take part in something so sacrosanct in this country, that could lead to folks who improperly became elected, like Mr Franken