Trump's commission on voter fraud has requested data from all the states on voters names, addresses, ID's, registration, and voting records. It's getting a lot of flak from the left and resistance from states both on the right (i.e. Mississippi) and left.
I'm a little conflicted on this, because I've a residual affection for the idea of a national identity, like Estonia, as an enabler for many good things. I don't trust Mr. Kobach or Hans von Spakowsky. In an ideal world there could be tradeoffs: do a national matching process to determine which voters are registered in more than one state and/or voted in more than one state while at the same time improving the national registry of firearms owners and those ineligible to own firearms.
That's a dream world though. As I posted recently, we have some security through chaos. Maybe one thing which could be done is to require states to do is bounce their voter registration lists against the SSA list of deceased voters (the same process as is done to avoid erroneous federal payments)>