Yes, this is most definitely a proxy in the ongoing political battle between the Senate Republicans and the DoJ. It's a little surprising that he would side with Aaron just to take a potshot at the U.S. attorney's office.
It's also worth pointing out that Texas (at least until recently) had some of the best open-records laws in the country. Cornyn argued that the Feds should emulate Texas in this regard -- during the Bush administration: http://gritsforbreakfast.blogspot.com/2005/03/cornyn-foia-sh...
It's also worth pointing out that Texas (at least until recently) had some of the best open-records laws in the country. Cornyn argued that the Feds should emulate Texas in this regard -- during the Bush administration: http://gritsforbreakfast.blogspot.com/2005/03/cornyn-foia-sh...