We all know exactly what the penalty must be for anyone who aids, abets, commits or condones vote fraud. Just a few well-selected applications of that penalty might be enough to discourage a significant amount of fraud in the future.
If that penalty is ever going to be applied (ha), the time is coming very soon. Otherwise your vote for President is completely worthless from here on out (goodbye, Electoral College); your vote at other levels down the ballot may not be worth much more either.