It wasn't impossible before, but with BTC/ETH it's far easier to launder money. With a Cryptocurrency tumbler [1] it's almost untraceable.
Previously, you had to carry the cash yourself, or use a service to transfer the wealth for you (through falsified business transfers, casinos, diplomats, flight attendants, etc.) Now you don't need all that, you can practically do it yourself. There are less people involved and it's harder to trace.
Previously, you had to carry the cash yourself, or use a service to transfer the wealth for you (through falsified business transfers, casinos, diplomats, flight attendants, etc.) Now you don't need all that, you can practically do it yourself. There are less people involved and it's harder to trace.
[1] https://en.wikipedia.org/wiki/Cryptocurrency_tumbler