HB 3644 enhances veteran status verification for inmates and prisoners. It requires: Counties to verify the veteran status of prisoners upon intake using federal data; The Texas Department of Criminal Justice (TDCJ) to confirm veteran status before transferring an inmate and to assist veterans in applying for federal benefits; County jails to submit daily reports of newly identified veterans to the Texas Veterans Commission and county veterans service officers; Veteran inmates to receive prepaid postcards to request assistance in accessing benefits; Veterans service officers to have free in-person or video visitation access to incarcerated veterans.