Lauren McGaughy, The Texas Newsroom ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published. This article is co-published with The Texas Newsroom and The Texas Tribune as part of an initiative to report on how power is wielded in Texas.

The governor’s office said some of the correspondence with the billionaire and his companies contains “intimate” information that isn’t of “legitimate concern to the public.”