I'm pretty sure it's not being built in MD. Article mentions that this private wall is somehow filling in a gap between two existing sections of govt wall.
And that's kind of the way it has always been proposed - not some long, completely contiguous wall from one end to another,
EVEN if it has sometimes been described that way, and often lampooned that way.
Even the Great Wall of China is not one completely contiguous wall, but rather a system of walls - even though some of them are VERY long.
It is at least as important to build walls where people are likely to or EASILY cross and especially where the barriers have collapsed, have
gaping gaps or simply don't exist. Somewhere the argument has taken the form of "no wall" or "one contiguous wall" even though
that isn't being proposed.