What it really means when legislation “pays for itself”

You hear it all the time: White House officials, pundits and lawmakers will claim a piece of legislation will “pay for itself.” President Donald Trump’s economic adviser Larry Kudlow said just this week that big 2017 cuts were two-thirds of the way there. But what’s that really mean, anyway? We’ll take some time today to define some terms. Plus: How Europe’s heat wave is affecting its economy and why Amazon is investing.