Do you really believe that the U.S. Immigration and Customs Enforcement is really
employing complex blockchain technology exploitation tools? No, because they are corrupt, incompetent and do not know anything.
What they probably did was hire Chainalysis hehehe. So they should not try to make themselves look like they know what they are doing if it concerns the cryptospace.
In addition, Nevano also indicated that ICE is employing "complex blockchain technology exploitation tools" in a bid to analyze cryptocurrency transactions and to discover the identities behind those transactions. Further, training is being provided by the agency to national and international cryptocurrency investigators to continue tackling the issue.Read in full https://www.coindesk.com/ice-exploiting-blockchain-to-expose-crypto-use-in-drug-trafficking/