the american authorities don’t want everyone to vote so they require registrations for each election cycle and make doing so, as well as retaining that status until election day, as legally difficult as possible for the ones that they don’t want voting. they also take extra steps to make the act of voting itself as legally difficult as possible for those that they don’t want to voting as well.
the people who they don’t want voting are majority of registered voters so to further minimize their voting power; our authorities gerrymander political districts so that the people who they DO want voting have an artificially oversized voting impact compared to those who they DON’T want voting. nearly all of the conservative states use this approach with texas being one of the worse examples per the 2020 census.