USA - American dollar (USD)
In the US, cash is used more than one might think. Often, minor expenses can't be paid with cards. Therefore, we recommend that you bring cash and cards when you travel. A credit card is often needed if you wish to rent a car. It is also recommended to have smaller denominations for tip. Make your exchange before you travel and be prepared when you arrive. No need to look for an ATM first thing after a long flight.