Whether 18 U.S.C. §922(g) authorizes conviction upon proof that a firearm once crossed state lines at an unspecified prior occasion, when there is no evidence that the defendants' conduct caused such movement, nor that it moved in the recent past?

QUESTIONS PRESENTED I. Whether 18 U.S.C. §922(g) authorizes conviction upon proof that a firearm once crossed state lines at an unspecified prior occasion, when there is no evidence that the defendants’ conduct caused such movement, nor that it moved in the recent past? IL. Whether the sufficiency of a factual basis for a defendant’s plea should be subject to plain error review, or whether, under Sullivan v. Louisiana, 508 U.S. 275 (1993), such a case lacks “an object” upon which review for harmless and plain error may operate? il PARTIES Michael Demon Nixon is the petitioner; he was the defendant-appellant below. The United States of America is the respondent; it was the plaintiff-appellee below. ill