Make our (costly) infrastructure great again

By his own admission, President-elect Donald Trump is a guy who likes to build stuff: A golf course in Scotland. A hotel in Washington D.C. A great, big beautiful wall on the American border with Mexico.

But when it comes to his most ambitious building project yet — a badly needed, $1 trillion upgrade of America’s roads, bridges, railways and airports, the nation’s incoming 45th chief executive is running into an challenge tougher than winning over even the crankiest of New York City code inspectors:

Finding a way to pay for it.

If there’s one thing we know about Trump’s agenda...