I was actually thinking that technology has become so efficient that 'cloning' $1 bills has become profitable, in the past I've only heard of counterfeit $20s

I was actually thinking that technology has become so efficient that 'cloning' $1 bills has become profitable, in the past I've only heard of counterfeit $20s and higher. If this is about customary fake Chinese money, the type that they usually burn on Chinese new year or funerals I'd be quite disappointed with law enforcement for spreading anti china propaganda. However, according to CPB During the examination, CBP discovered 45 cartons of possible counterfeit currency in the form of $1 bills with a total face value of $900,000. The United States Secret Service was contacted determined the currency is counterfeit. In other words it's so well done that it may be hard to tell whether it's counterfeit or it's simply real money.