this was news to me: the ICE enforces narcotics trafficking/distribution laws and even leads inter-agency money laundering investigations.
https://www.ice.gov/narcotics
https://www.ice.gov/money-laundering
the mention of "online forums" is odd but this may be getting blown out of proportion. the entire budget proposal mentions "cryptocurrency" twice, both in that one paragraph. the emphasis seems to be on narcotics-related money laundering associated with darknet marketplaces.
It might be, however, your friendly old neighborhood forum money transmitter might have its own uses for our tormentors for intelligence gathering and double crossing hehehehe.