Gov. Rick Perry pointed out Wednesday that Cameron Todd Willingham's murder convictions were upheld several times before his 2004 execution.
Forensic scientists have called into question arson evidence used to convict Willingham, who maintained his innocence until his death.
Perry says recent news reports have glossed over evidence that shows Willingham killed his children.
The governor has been criticized for replacing members of the Texas Forensic Science Commission just before they were to review a new report critical of the arson science used to convict Willingham.