Sens. Cynthia Lummis, R-Wyo., and Ron Wyden, D-Ore., sharply criticized the U.S. Justice Department's enforcement approach to crypto amid their concerns that the department has expanded its breadth to crypto mixers over the past few months. 

In a letter sent to U.S. Attorney General Merrick Garland last week, bipartisan lawmakers Wyden and Lummis wrote expressing their "grave concerns" over the DOJ's expansion of the definition of money transmission as laid out by the Treasury Department's Financial Crimes Enforcement Network.

"I’m concerned the DOJ’s interpretation would treat software developers as criminals for merely writing and publishing code used by others – a dangerous precedent that contradicts decades of settled law and raises serious First Amendment concerns," Wyden said …