The U.S. Supreme Court’s 5-4 ruling in Citizens United v. Federal Election Commission was ‘a distinctive product of the Roberts Court…[reflecting] aggressive conservative judicial activism…The Roberts Court, it appears, will guarantee moneyed interests the freedom to raise and spend any amount, from any source, at any time, in order to win elections’.
http://www.newyorker.com/reporting/2012/05/21/120521fa_fact_toobin?currentPage=all