What did Donald Trump do today?

He lied about the border wall again.

As of today, Trump is in full vacation mode, and will be for at least the next two weeks—something that his own aides are telling reporters has them worried. But Trump never takes a break from tweeting, and today he tweeted about the defense appropriations bill he signed. 

He bragged that the "New planes, ships, missiles, rockets and equipment of every kind" it authorized the purchase of would all be "made right here in the USA." That's probably at least as true as it always is. 

But then Trump added "we got Border Wall (being built) funding. Nice!"—which isn't really true, because he didn't get what he asked for and no wall is "being built." Trump had asked for $5 billion dollars to build his much-talked about, still-never-built wall. What he got was $1.37 billion dollars in maintenance and upgrades for existing fenced areas. 

This is the same amount of money he got last year, after he shut the government down for over a month in a vain attempt to force Congress to budget more money for border fences. 

In a way, it's not really Trump's fault that zero miles of new "wall" have been built. Even if Congress—or most Americans—actually wanted Trump's fantasy of a wall, it couldn't have been built by now anyway. A wall that was actually useful in deterring or preventing border-crossing would have to be carefully sited and tailored to the local terrain, on land that had been purchased from the private owners it would have to cross. Trump hasn't done or even tried to do any of these things, which would take years.

Why should I care about this?

• It's wrong to lie about having done things you haven't done.