According to the list of US states and territories by area, DC is 22 times smaller than the smallest state (Rhode Island). Despite this fact, there is currently a push to turn DC into an independent state. Why is this the preferred option to grant DC voters the right to vote in Congressional elections (they can already vote in Presidential elections), rather than simply merging DC into Maryland?
There is already historical precedent where a part of DC was returned to Virginia, so we know it is constitutionally permissible. Federal buildings could continue to be managed by the federal government, similar to how the current DC statehood proposal intends to keep them under Federal control.