Read, if you have access to it, that Wall Street Journal editorial headlined “Illinois Drives People Away.” The primary data it cites is this: The Prairie State lost a record $4.75 billion in adjusted gross income to other states in the 2015 tax year, according to recently IRS data released. That’s up from $3.4 billion in the prior year. Many of the migrants were retirees who often flock to balmier climes. But millennials accounted for more than a third of the net outflow in tax returns. That data should be on every front page, I wrote last week, but the