Texas death row inmate blocked from testifying in-person at hearing The IndependentGov. Greg Abbott’s office condemns Texas House lawmakers that intervened in Robert Roberson’s execution The Texas TribuneGreg Abbott urges Texas high court to block Robert Roberson testimony Houston Chronicle Texas House committee chair signals death row inmate Robert Roberson will not testify Monday, despite subpoena CNNTexas House Postpones Testimony of Death Row Inmate in Shaken Baby Case The New York Times