1. Whether the TCCA contravened the Eighth and Fourteenth Amendments, and this Court's precedents, when it evaluated petitioner's intellectual disability claim based on its own standard instead of medically accepted criteria.

2. Whether petitioner received ineffective assistance of counsel in violation of the Sixth Amendment when his counsel abandoned an investigation into his intellectual disability without having any medical professional evaluate the defendant for that condition.

Whether the TCCA contravened the Eighth and Fourteenth Amendments, and this Court's precedents, when it evaluated petitioner's intellectual-disability claim based on its own standard instead of medically-accepted criteria