There's surprisingly little discussion today of the fact that a jurisdiction can get out of under the pre-clearance standard by simply demonstrating over a ten year period
that they're no longer abusing/discriminating against minority voters in the jurisdiction. And a substantial number of jurisdictions have been able to do that, especially with revisions to the law passed in the early 1980s. Here's a piece
on how New England got entirely out of under the VRA pre-clearances process (yes, there were covered areas) basically by not being racist.