Emily Bazelon, David Plotz, and John Dickerson discuss the Supreme Court's ruling on the Affordable Care Act, the meaning and symbolism of Confederate iconography, and Pope Francis's encyclical on climate change. The Slate Political Gabfest is sponsored by Stamps.com. Buy and print official U.S. postage using your own computer and printer, and save up to 80% compared to a postage meter. Sign up for a no-risk trial and a $110 bonus offer when you visit Stamps.com and use the promo code GABFEST. And by Casper, an online retailer of premium mattresses for a fraction of the price. Casper mattresses come with free delivery and returns within a 100-day period. And get 50 dollars toward any mattress purchase by visiting casper.com/gabfest and using the promo code POLITICAL. And by Blue Apron, the new service that delivers all the ingredients you need to make incredible meals at home. Discover a better way to cook.  Visit BlueApron.com/gabfest to get your first two meals free. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at www.slate.com/gabfestplus. Twitter: @SlateGabfest Facebook: facebook.com/Gabfest Email: gabfest@slate.com Show notes at slate.com/gabfestLearn more about your ad choices. Visit megaphone.fm/adchoices