The US Constitution (Article II, Section 2, Clause 2) grants the President the power to "pardon Offenses against the United States." This means that the Offense (crime), as well as the person who committed it, must be identified in order for the pardon to take effect.
Blanket pardons are Unconstitutional because they do not meet both criteria. If the Offense is unspecified (or unknown), it cannot be pardoned any more than if the perpetrator is unknown. Otherwise, the President would have the power to nullify laws passed by Congress.
Blanket pardons covering a specified period of time are particularly odious to the Constitution. What if the person being pardoned committed an unknown crime (e.g., murder) during that time period? Would (s)he be permanently immune from prosecution?
Stare decisis is a good general principle, but when a series of expedient court decisions have left us down a rabbit hole, it is time to plow the field back to its intended purpose.
Blanket pardons are Unconstitutional because they do not meet both criteria. If the Offense is unspecified (or unknown), it cannot be pardoned any more than if the perpetrator is unknown. Otherwise, the President would have the power to nullify laws passed by Congress.
Blanket pardons covering a specified period of time are particularly odious to the Constitution. What if the person being pardoned committed an unknown crime (e.g., murder) during that time period? Would (s)he be permanently immune from prosecution?
Stare decisis is a good general principle, but when a series of expedient court decisions have left us down a rabbit hole, it is time to plow the field back to its intended purpose.