Whether a certificate of appealability should have issued to address the question whether a district court may deny a habeas-corpus-petition as 'speculative' without conducting an evidentiary-hearing

QUESTION PRESENTED I. Whether a certificate of appealability should have issued to address the question whether a district court may deny a habeas corpus petition as “speculative” without conducting an evidentiary hearing. I. Whether a certificate of appealability should have issued to address the question whether de novo review of a claim of cumulative error requires de novo review of the underlying errors. i