 This is All Things Considered from NPR News. I'm Juana Summers. And I'm Scott Detrow. In a major ruling on homelessness, the Supreme Court today said cities can punish people for sleeping outside. The 6-3 decision broke down along ideological lines, and it could have sweeping consequences for the quarter of a million people who live on U.S. streets and parks or in their cars. NPR's Jennifer Ludden is here to explain. Hey, Jennifer.