Certainly the exercise of sound prosecutorial discretion would not dictate prosecuting such a case.

CNN: House Judiciary Committee hearing,

But in the case of assisted suicide, prosecutorial discretion will now be accepted as the norm rather than the exception.

ECONOMIST: Assisted suicide

It has to do with building on an enforcement decision about prosecutorial discretion and this is about implementing our enforcement priorities.

WHITEHOUSE: Press Briefing

This may be good or humane policy, yet there is no reading of "prosecutorial discretion" that allows for blanket immunity for entire classes of offenders.

WSJ: Strassel: Obama's Imperial Presidency

Mr. WILLIAM SAFIRE (The New York Times): I'm seething inside because I cannot tell you what I really think of the unchecked abuse of prosecutorial discretion.

NPR: Judiciary Committee Considers Reporter Shield Law

The government says it is exercising prosecutorial discretion to ensure enforcement resources aren't expended on low-priority cases, such as individuals who came to the U.S. as children.

WSJ: Immigration-Policy Details Emerge

Federal prosecutors need to use something called prosecutorial discretion.

FORBES: Criminalizing Capitalism

The administration pledged to use prosecutorial discretion to free from deportation proceedings individuals who had been in the country for a number of years, had U.S.-born children, or were otherwise rooted in the United States.

CNN: Will Obama's immigration initiative sway Latinos?

But, he said a pardon for Libby would be "worth looking at" because the special prosecutor in the case, Patrick Fitzgerald, "clearly abused prosecutorial discretion" by going after Libby when Fitzgerald knew he was not the original source of the leak.

CNN: Prospect of pardoning Libby splits GOP field