The DOJ core legal theory in theRoman Storm crypto casehas never been that writing code is a crime. It's that exercising operational control over a platform that processes more than $1 billion in illicit funds – while explicitly declining to implement feasible anti-money-laundering controls – constitutes running a criminal business. That distinction is the mechanism that makes this case matter far beyond Tornado Cash. Prosecutors filed a letter Tuesday rejecting Storm's attempt to leverage a March Supreme Court ruling inSony Music v.