Check out this review of the Constitution in 2020 on SSRN:

Professors Balkin and Siegel’s book is part of a larger project to improve the constitutional theorizing of judges and the elected political branches in the direction of left, liberal outcomes, i.e., to realize a progressive political agenda for the Nation. The coeditors and the twenty-two contributors are fancy con law professors at fancy law schools. They combined for twenty-seven brief essays on how to make the United States a better country according to their 2020 constitutional vision (pun intended). Their ruminations cover pretty much the entire constitutional domain, including: interpretation, voting, social justice, citizenship, democracy, civil liberties, religious diversity, family, reproductive rights, federalism, presidential power, and transnationalism. There are frequent appeals to diversity and dialogue and regular entreaties for new mobilizations.

Ilya Shapiro and I are writing an article on the Privileges or Immunities Clause and the Constitution in 2020 in the context of McDonald and the Second Amendment Corporation.Opening Pandora’s Box? Privileges or Immunities, The Constitution in 2020, and Properly Incorporating the Second Amendment, forthcoming in the Georgetown Journal of Law & Public Policy.