Congressional Republicans have a new talking point about President Donald Trump's border wall: It's not really a wall at all.
Instead, the wall is "a bit of a metaphor as to border security," in the words of Rep. Mario Diaz-Balart of Florida.
Or, a "quote, wall," as Sen. John McCain of Arizona put it: A combination of drones, towers, anti-tunneling devices and the like that add up to enhanced border security.
The issue arose this week as Congress squabbled over government-wide spending legislation, including money for security measures along the U.S.-Mexico border.
After the president backed off his demands in face of Democratic...