Should voting be mandatory in the United States?

My church shares a parking lot with a Kingdom Hall, so I know plenty of Jehovah's Witnesses. They don't vote as a matter of conscience, and the Amish mostly don't either. A mandatory voting law would either criminalize their faith or carve out religious exemptions, and the moment you start carving exemptions, everyone claims one and the mandate becomes a joke. The state shouldn't be in the business of deciding whose conscience counts. Pew data on religious groups shows millions of Americans whose faith keep them out of the voting booth. This isn't a hypothetical edge case.