What is a Super PAC?

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A super PAC is a political committee that can solicit and spend unlimited sums of money. A super PAC cannot contribute directly to a politician or political party, but it can spend independently to campaign for or against political figures. These committees are also called independent expenditure-only committees. A super PAC is not legally considered a political action committee (PAC) and as such is regulated under separate rules.[1][2]
Super PACs

In 1976, the United States Supreme Court ruled in Buckley v. Valeo that individuals cannot be prevented from spending unlimited sums of money on political messaging. With two 2010 rulings, the United States Supreme Court lifted restrictions on corporation and union spending in politics. Individuals, corporations and unions may now legally donate and spend unlimited amounts on independent political speech; they may also donate unlimited amounts to groups that make independent expenditures