Former White House Administrator
Cass R Sunstein, the former administrator of the White House Office of Information and Regulatory Affairs, is the Robert Walmsley university professor at Harvard Law School and a Bloomberg View columnist.
The US presidential candidates from both parties are focusing, as usual, on the middle class. But what's that? And why, exactly, does it deserve such attention?
This week, Pope Francis is expected to implore both the US Congress and the UN General Assembly to take aggressive steps to curb greenhouse-gas emissions. His thinking on this issue is not simple alarm over climate change. It involves an extraordinary combination of passionate environmentalism, concern for the poor, scepticism about economics and apparent hostility to "profits". All this makes for an impressive but occasionally awkward argument.