When Citizens United v. Federal Election Commission was first argued before the Supreme Court, on March 24, 2009, it seemed like a case of modest importance. The issue before the Justices was a narrow one. The McCain-Feingold campaign-finance law prohibited corporations from running television commercials for or against . . .
via The New Yorker http://www.newyorker.com/reporting/2012/05/21/120521fa_fact_toobin