I need more than 50 claps for this!
Mandatory voting works just fine in Australia. We should try to identify the appropriate House subcommittee that handles voting rights, and email the heck out of them.
Also, to be clear, political resistance is expected because they all know the game would be changed, for all the reasons you gave. But the legal resistance could be low. Voting mechanics are not constitutional issues. No amendments are required. Just a law, and it’s done.