US consumers are very conservative when it comes to money. I'm not sure why exactly. Plus no one prints more bills than the US Treasury so some security feature

US consumers are very conservative when it comes to money. I'm not sure why exactly. Plus no one prints more bills than the US Treasury so some security features would be too expensive or wouldn't hold up for the period of time necessary. Just show someone some Canadian money and you'll most likely get snickers and "Monopoly money" comments. That being said US currency does have a number of security features - maybe other countries are overdoing it?