On The DMZ, Bill and guest-host Justin discuss Republican attempts to defund Obamacare. Justin thinks large parts of the GOP base exist in a misinformation bubble. Justin critiques the Affordable Care Act, but wants conservatives to accept that the law will be enacted. Bill and Justin debate whether the Justice Department erred by suing to block the US Airways–American Airlines merger. Reviewing the recent economic growth in Europe, Justin comes out as a conservative Keynesian. Plus: Should Larry Summers be the next Fed Chief?