Paul Gigot: This week on "The Journal Editorial Report," House
Republicans decide that defunding ObamaCare is the price of
keeping the government open, setting the stage for a showdown in
the Senate. Is it a smart strategy for the GOP? Plus, a newly
uncovered list of targeted groups shows how and why the IRS
singled them out for scrutiny. And two years after Scott
Walker's reforms, a look at what's happened to Wisconsin's
unions now that public workers have a choice.   Gigot: Welcome
to "The Journal Editorial Report." I'm Paul Gigot.  Yielding to
pressure from conservatives, House Republicans decided this week
to strip funding for ObamaCare from a stopgap spending bill that
would keep the government running past Sept. 30, setting the
stage for a showdown in the Senate next week as a shutdown
looms.  Some in his own party have called the move political
suicide, but House Speaker John Boehner had this message for his
critics and his Senate colleagues.  Boehner: ObamaCare's driving
up the cost of health care. It