The federal government couldn’t even compel the states to give them voter information. Remember that Trump established a commission to investigate vote fraud, and he had to disband it. I hardly think that the federal government can guarantee anything when it comes to vote fraud. They are along for the ride along with the rest of us. Only congress can act to change that for federal elections.
Because so many of the states were not cooperating with the commission headed by VP Pence, it was disbanded, and voting was designated a National Security issue, and DHS took over. I’ve read a few articles over the last year about this, and it appears they are acting quietly with very little public fancare. As far as I can remember, cleaning up voting rolls is what is happening, but in what manner, and what else may being done, I don’t know.
I don’t see why the fed gov can’t make clean elections. Other countries like India can do it. Everyone in India has a voter ID card.