Yeah, it's really not even a tradeoff in the same area in this case. The OFAC sanctions on TC are because they believe that it was being used by and enabling North Korea and various foreign terrorist organizations.
DOJ asking Tether not to interfere with other investigations is presumably because they are tracking some fraud or other crimes and want to use that intel to either identify the culprits or to build up a solid body of evidence that they can use to prosecute.
They already know who North Korea and various terrorist organizations are and the DOJ can't exactly prosecute them.
Claiming or implying equivalence between OFAC sanctions and DOJ investigations is either stupid or disingenuous.
DOJ asking Tether not to interfere with other investigations is presumably because they are tracking some fraud or other crimes and want to use that intel to either identify the culprits or to build up a solid body of evidence that they can use to prosecute.
They already know who North Korea and various terrorist organizations are and the DOJ can't exactly prosecute them.
Claiming or implying equivalence between OFAC sanctions and DOJ investigations is either stupid or disingenuous.