Many people including Harvard economist Ken Rogoff, feel the U.S. $100 bill benefits criminals tremendously. Some people feel U.S. $100 bills should just be abolished completely considering most Americans don't use them.

In fact, close to 80 percent of U.S. currency is in $100 bills and as high as 70 percent of all those $100 bills aren't even circulating in the United States. Instead, they're located overseas, according to years of research from Treasury officials.

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When you consider that many stores in the U.S. don't accept $100 bills and also the fact that they practically have untraceable characteristics (making it more enticing to steal), then you can't help but understand their argument against the bill.

Indeed, criminals do benefit from using $100 bills. Whether it's drug and weapon dealers or human traffickers, these criminals will need to transport their cash to other locations.

If the U.S. ended up killing off the $100 bill, criminals would be then be forced to work with $50s- double the amount of bills equals double the amount of risk, as well as double the amount of hassle involved in transporting money.

However, $100s aren't entirely bad. People seem to forget they can benefit ordinary people as well.  

Some people around the world don't trust their government or banks to safely hold all their hard earned money, so instead look to stash their cash in personal safes.

Economist at the Fed, Ruth Judeson, isn't convinced that we should abolish $100s. She says the Fed doen't have information that can tell you exactly how much money is being used with good or bad intentions.  

Criminals will find a way to transport their money regardless what happens. Whether they're forced to use $50s or simply change the currency they're using. For example, a 500-euro note, the highest value euro banknote, is available at the European Central Bank. This would give criminals even more value in a single bill.

Tags$100 bill, Treasury, Ken rogoff, criminals