it is very possible that bitcoin will become money laundering.
because the price is very high and makes bitcoin has a very high value.
and maybe people do money laundering for taxes they have to pay
Bitcoin can be use for money laundering, same with fiat, but the price is not relevant to it.
Why people use bitcoin to launder as they can mix the origin of transaction and make it untraceable, regardless of the price, people will still use as long as they can benefit on it. However, the government are already full aware of this, especially the AMLC, and in fact, lots of mixers have already shut down.