Today's Supreme Court opinion in Indiana v. Edwards is available on the Court's website. The case deals with the issue of the marginally competent defendant who is mentally able to stand trial but not to represent himself, yet he insists he wants to do just that, invoking the 1975 decision in Faretta v. California, 422 U.S. 806.
Today's decision recognizes that the Faretta right is not absolute. The "consensus" on which it was based was formed by cases that recognized there were limits, and that mental competence is one of those limits. See slip op. 9-10, CJLF Brief 7-14.