Ronald Dworkin has a great essay about the Citizens United decision in the New York Review of Books.
Here's a taste.
On the most generous understanding the decision displays the five justices’ instinctive favoritism of corporate interests. But some commentators, including The New York Times, have suggested a darker interpretation. The five justices may have assumed that allowing corporations to spend freely against candidates would favor Republicans; perhaps they overruled long-established laws and precedents out of partisan zeal. If so, their decision would stand beside the Court’s 2000 decision in Bush v. Gore as an unprincipled political act with terrible consequences for the nation.
We should notice not just the bad consequences of the decision, however, but the poor quality of the arguments Justice Kennedy offered to defend it. The conservative justices savaged canons of judicial restraint they themselves have long praised. Chief Justice Roberts takes every opportunity to repeat what he said, under oath, in his Senate nomination hearings: that the Supreme Court should avoid declaring any statute unconstitutional unless it cannot decide the case before it in any other way. Now consider how shamelessly he and the other Justices who voted with the majority ignored that constraint in their haste to declare the Act unconstitutional in time for the coming mid-term elections.
Read the rest here.