Citizens United, whose court challenge to rules barring political spending by corporations has led to far-reaching changes in the campaign finance landscape, has formed its own Super PAC, allowing it to raise and spend unlimited amounts of money to influence elections.

Paperwork for the new committee -- Citizens United Super PAC LLC -- was received by the Federal Election Commission on Saturday Friday and posted on its website this morning.

In Citizens United v. FEC, the Supreme Court ruled 5-4 in January 2010 that prohibitions on independent expenditures by corporations and unions are unconstitutional. The case grew out of Citizens United's ...