Whether a state court's denial of a Brady claim alleging prosecutorial suppression of material impeachment evidence, without explanation or argument, violates the Due Process Clause of the Fourteenth Amendment and warrants federal habeas review

tion presented the claim that the local prosecutor’s office and the Attorney General withheld material impeachment evidence at trial, direct appeal, post-conviction, and habeas proceedings, in violation of this Court’s decision in Brady v. Maryland, 373 U.S. 83 (1963) and the due process clause of the Fourteenth Amendment. The Missouri Supreme Court denied the petition without argument in an unexplained order.