New York Times in its article “New Steps by U.S. Against Iranians” wrote:
While the United States has long labeled Iran as a state sponsor of terrorism, the decision to single out the Guard reflects increased frustration in the administration with the slow pace of diplomatic negotiations over Tehran’s nuclear program.
The article added: The action against the Revolutionary Guard, first reported by The Washington Post, would set in motion a series of automatic sanctions that would make it easier for the United States to block financial accounts and other assets controlled by the Guard. In particular, the action would freeze any assets the Guard has in the United States, although it is unlikely that the Guard maintains much in the way of assets in American banks or other institutions.