Petitioner-appellant, Leland W. Henderson, appeals from the district court’s denial of his petition for a writ of habeas corpus pursuant to 28 U.S.C. § 2254. The district court denied relief on the merits, rejecting Henderson’s challenge to two separate convictions entered pursuant to guilty pleas. We do not reach the merits of the habeas petition because the state court found that Henderson had pro-eedurally defaulted, and he is unable to show cause and prejudice. We affirm the district court’s refusal to grant habeas relief on the grounds that Henderson waived his constitutional claim by failing to file a timely post-conviction petition in state court.
I.
In 1962 and 1964, Henderson pleaded guilty to separate charges of vehicle theft for which he was sentenced to one to ten years at the Indiana Reformatory. Henderson did not challenge these convictions in a direct appeal or state post-conviction proceeding. In 1981, Henderson was convicted of attempted murder and sentenced to ten years in prison. On the basis of the 1962 and 1964 convictions, the court adjudged Henderson to be an habitual offender, and his ten-year sentence was enhanced by another thirty years.
On May 12, 1983, Henderson filed a petition for post-conviction relief, seeking to challenge the voluntariness of his guilty pleas in the 1962 and 1964 convictions. Following a hearing, the state court denied Henderson’s petition solely on the grounds that laches barred him from bringing the petition. The court found that the approximately twenty-year delay was unreasonable and that, as a result of the delay, the government had been prejudiced since a retrial would be impossible given that key witnesses in each case were either dead or seriously ill. The Court of Appeals of Indiana affirmed on the procedural ground of laches. Transfer to the Supreme Court of Indiana was denied.
Henderson then filed a petition for a writ of habeas corpus in the district court. The government argued that Henderson had procedurally defaulted in state court under the state law doctrine of laches, thus barring federal habeas corpus review. The magistrate, however, addressed laches as that concept is used in the context of Rule 9(a) of the Rules Governing § 2254 cases, not as it is used in the context of state procedural default. The magistrate concluded that the government had not been prejudiced in its ability to challenge the habeas corpus petition since the transcripts of the guilty pleas were available, and consequently, the district court *1272 reached the merits of Henderson’s claim that his 1962 and 1964 guilty pleas were not knowingly and voluntarily given. The district court rejected Henderson’s claim on the merits, and Henderson appeals.
II.
Before we can address the constitutional question of whether Henderson’s guilty pleas were knowing, intelligent and voluntary, the state courts must have had a full and fair opportunity to review the claim.
See Morrison v. Duckworth,
A number of courts have held that illiteracy does not constitute cause for a procedural default.
See Smith v. Newsome,
Henderson’s illiteracy does not explain why, at some point in the course of his repeated contacts with the criminal justice system from 1961 through 1981, he did not ask appointed counsel about the possibility of challenging the guilty pleas. Henderson argues that because counsel was representing him on unrelated matters, counsel had no obligation or motivation to inquire into these convictions. This may be true; nonetheless, Henderson has an obligation to take a minimal interest in his own defense. Henderson argues that he did not learn that the guilty pleas involved potential constitutional violations until 1981 when they were used to enhance his sentence and that *1273 he then immediately and diligently sought post-conviction relief. Henderson’s diligence after 1981 does not excuse his failure to inquire and the consequent delay before 1981.
We also note that illiteracy is not the type of external impediment to which the Supreme Court alluded in
Murray v. Carrier,
There is still one avenue open which may permit us to reach the merits of Henderson’s claim despite his inability to show cause. The Supreme Court has warned that the cause and prejudice standard is a flexible one which yields to exceptional circumstances.
See Engle v. Isaac,
III.
Because Henderson has failed to show sufficient cause for his failure to file timely post-conviction petitions to challenge his guilty pleas, he has waived his constitutional claim. We affirm without consideration of the merits.
AFFIRMED.
