In a vigorous and cogent Suggestion for Rehearing En Banc, the United States calls in question our reversal of Elizabeth Chag-ra’s conspiracy conviction. We held that the trial court erred when it refused her request for a jury charge that in order to convict her of that offense it must find that she entered the conspiracy to murder Judge Wood with premeditation and with malice aforethought, such being the degree of criminal intent necessary to the substantive offense itself, instead instructing the jury that it would suffice for her conviction that she knowingly and wilfully became a member of a conspiracy to murder Judge *188Wood on account of the performance of his official duties. Our holding was based on such statements by the Supreme Court as are to be found in Ingram v. United States, 360 U.S. 672, 678, 79 S.Ct. 1314, 1319, 3 L.Ed.2d 1503 (1959), that “conspiracy to commit a particular substantive offense cannot exist without at least the degree of criminal intent necessary for the substantive offense itself.” (emphasis in original). See also United States v. Feola, 420 U.S. 671, 686, 95 S.Ct. 1255, 1264, 43 L.Ed.2d 541 (1975).1
We might write at length on the policy considerations implicated by the “plurality of intent” controversy. In the view of some commentators, it should suffice that between at least two conspirators (or perhaps in one only) there existed the degree of intent required for conviction of the substantive offense, the others joining “knowingly and wilfully” in the enterprise; in that of other authorities, no person should be convicted of conspiracy to commit a given crime without proof that he personally possessed that degree of criminal purpose.2 In the practical end, these conflicting positions reduce to debating points to be made before the jury. For us, the matter is simply concluded: we bear in mind our situation as magistrates sitting on a subordinate court.
The Supreme Court has spoken broadly and categorically in these premises, perhaps in recognition that conspiracy law is something of a potential ampelopsis.3 The history of the prosecution of conspiracy, like that of treason, contains disreputable chapters. In any event, we hew to the Court’s broad language; if that is to be trimmed, it is for the Court to do so, not for us. Until it does, we march by our orders.4 Unless the Court does not mean what it has said, one cannot be convicted of conspiracy to commit first degree murder without being found to have entertained the gravest of criminal intents: premeditation and malice aforethought. We maintain our view that the trial court erred in failing to require such a finding of the jury as a condition of conviction. Considering the importance of that conclusion and of the case in which we draw it, we rest confident that if we have erred in following the Supreme Court’s expressions too literally, it will tell us so.
It remains for us to deal with an ingenious alternative contention advanced by the United States. Supposing the panel to be correct in its view of the requisite intent for conspiracy to commit first degree mur*189der, the government suggests, the charge given should be viewed as one for a lesser included offense: wilful murder, i.e., murder in the second degree. And because the penalty ceiling for conspiracy to commit second degree murder is the same as that for conspiracy to commit first degree murder, the argument runs, Elizabeth Chagra has suffered no prejudice. Although the argument comes close indeed, it contains one fatal flaw and we must reject it.
The intent required for second degree murder is malice aforethought; it is distinguished from first degree murder by the absence of premeditation. United States v. Shaw, 701 F.2d 367, 392 (5th Cir.1983). The trial court did not charge on malice aforethought as to Elizabeth Chagra, however, but rather on wilfulness — a different concept.5
There are no federal common-law crimes, only statutory ones. Dickey v. United States, 404 F.2d 882, 884 (5th Cir. 1968). Title 18 recognizes no such crime as wilful murder of a federal officer arising from the performance of his duties. It recognizes only murder in the first degree, in the second degree, or manslaughter arising from such a cause. The instruction given defines none of these. It follows that the jury convicted Elizabeth Chagra of conspiring to commit a non-existent crime.
The Petitions for Rehearing are DENIED and no member of this panel nor Judge in regular active service on the Court having requested that the Court be polled on rehearing en banc, (Federal Rules of Appellate Procedure and Local Rule 35) the Suggestions for Rehearing En Banc are DENIED.