Solutions or at least some discussion points for around the water-cooler... [[ with good intentions from a non-american who lives in a representative democracy where a federal election department administers federal and state elections. ]]
Compulsory voting in Federal elections by all adult citizens. Payment for voting by electronic means: therefore a form of voter ID required to accept registration and payment.
If there are a known quantity of registered voters you then expect the total number of votes cast to numerically match up within a reasonable margin. This prevents “Snipes” votes - the extra extra catchup misplaced votes turning up inside all manner of trains planes and automobiles.
Bad, BAD idea.
Dunno if you have noticed, but big turnouts are bad for Republicans. I pray for bad weather every election.
In fact, the vast majority should not vote. They’re too ignorant and have too little ‘skin in the game.’