The answer is Political Donations also known as Campaign Finance
In the United States, it is common for big businesses to support a certain member who is running for the Presidential Office. To gain some influence and to enhance lobbying efforts, all these companies are allowed to donate a certain amount of money.
These donations can ONLY be used to the fund the political campaign of a candidate and cannot be used for personal needs.
While controversial, it has become an integral part of America's democratic system and every President who wins is supported by large corporations.