In addition to Trump's wife, Melania Trump's cost of living in New York, which depending on sources, costs up to $300 million per year, there are considerable costs that the American taxpayer needs to take care of related to Trump's sons as well.

Now that Donald Trump's business has been given over to his sons to run, the costs involving their security is going higher by the day. Considering the vast amounts on international travel they need to do, and the fact that they are part of the president's family, and that president's family need to be protected by the secret service at all times, it all amounts to increased spending for secret service.

"When you have a presidential family like the Trump family that is so involved in international business, the logistical issues, the costs and the security risks are more substantial than we're used to seeing," says Brendan Doherty, a U.S. Naval Academy professor.

There are no exact figures available at this time, but according to The Washington Post estimation, Eric Trump's trip to Uruguay cost $97,830 for just hotel bills. Other costs that can be added here are the cost of travel, and overtime for secret service agents.