Whether the Petitioner was denied his due process Fifth Amendment right due to being procedurally defaulted from presenting his vagueness challenge

QUESTION PRESENTED L Whether the Petitioner was denied his due process Fifth Amendment right to the United States Constitution due to being procedurally defaulted from presenting his vagueness challenge pursuant to United States v. Davis, 139 S.Ct. 2319 (2019) in his Motion to Vacate Sentence pursuant to 98 U.S.C. §2255 where at the time of his direct appeal of his conviction and 50 year sentence of imprisonment, the Davis claim was not reasonably available to him due to the state of the law at that time? | i