Did Mr. Deck present grounds for relief as to which reasonable jurists could differ concerning the correctness of the district court's conclusion, thus requiring a COA?

QUESTION PRESENTED FOR REVIEW Mr. Deck filed a petition for habeas corpus relief from his convictions and death sentences. The district court granted relief as to two grounds, but denied both relief and a certificate of appealability (COA) as to all other grounds. Without explanation, the Eighth Circuit also denied a COA, and denied rehearing. The case thus presents the following questions: 1. Did Mr. Deck present grounds for relief as to which reasonable jurists could differ concerning the correctness of the district court’s conclusion, thus requiring a COA? 2. Did the court of appeals’ unexplained denial of a COA as to any grounds improperly insulate its decision from review by this Court? i