The problem in the U.S. is that the 50 states control the voting process. It's not like France,
If we are to stop whining about vote rigging and start doing something about it, we have to encourage major candidates to adopt a platform of electoral reform to be applied consistently across the US - and that can only be done at Federal level - especially if we also want to remove the Diebold monopoly control of parts of the process. notes from no w here
Wikipedia says:
The Constitution gives the power to the state legislatures to decide how electors are chosen, and it is easier and cheaper for a state legislature to simply appoint a slate of electors than to create a legislative framework for holding elections to determine the electors. As noted above, the two situations in which legislative choice has been used since the Civil War have both been because there was not enough time or money to prepare for an election.