Question: what is the function of a political action committee (pac)?
Answer: pools campaign contributions from members

In the United States and Canada, a political action committee (PAC) is a type of organization that pools campaign contributions from members and donates those funds to campaign for or against candidates, ballot initiatives, or legislation.  The legal term PAC has been created in pursuit of campaign finance reform in the United States. This term is quite specific to all activities of campaign finance in the United States. Democracies of other countries use different terms for the units of campaign spending or spending on political competition (see political finance). At the U.S. federal level, an organization becomes a PAC when