Even the most laudable aspect of the deal — the agreement to pay $46.5 million in restitution to the families of the victims — is illusory. Massey already had agreed to pay $16.5 million to settle lawsuits brought by the families. The remaining $30 million will be paid into a fund for future settlements, which effectively caps the amount the families can recover. And, to add insult to injury, the Justice Department agreed that Massey would admit no wrongdoing.

So why did the Justice Department respond so timidly?

Perhaps it felt hamstrung by the weakness of the criminal provisions of the Mine Safety and Health Act, which are misdemeanors and cover only willful violations of health and safety standards. It is long past time for Congress to update our mine safety laws so that violations can be prosecuted as felonies, particularly in cases where miners are killed.

Maybe the Justice Department wanted to reward the new owners, who appear to have made a greater commitment to safety. It may also have felt it would be enough to criminally prosecute Massey officials, which it can and should do if there is sufficient evidence.

We should not underestimate, however, the difficulty of prosecuting high-ranking officials in large corporations. This case may be an exception, but senior corporate officers rarely have sufficient personal involvement to be charged with crimes. To reach the boardroom, where policies are formed that can lead to tragedy, we must be willing to hold corporations criminally responsible.

During my 17 years at the Justice Department, we prosecuted corporations criminally in hundreds of cases that, while serious, did not involve the tragic loss of life at the Upper Big Branch Mine. The Justice Department did not live up to its name in agreeing not to prosecute Massey for its crimes. We can only hope that when it comes to the other unfathomable disaster that took place in April 2010, the BP oil spill in the Gulf of Mexico, justice will be better served.