The Supreme Court ruled today that journalists cannot avoid grand jury subpeonae asking them to reveal their sources (or, put another way, that journalists can face jail time for failing to reveal their sources in response to a grand jury subpoena).

This puts the plaintiffs, Time magazine’s Matthew Cooper and The New York Times’ Judith Miller, in a precarious position.  Do they reveal the name of the White House source who told them that Valerie Plame was a CIA agent, or do they face up to 18 months in prison?

UPDATE/CORRECTION: Okay, technically, SCOTUS didn’t “rule” on this case.  They just declined to hear it, meaning that the contempt citations stand.