Relating to the civil liability of certain businesses in connection with allowing concealed handguns on the business premises.

HB 644 protects businesses from civil lawsuits if they allow licensed concealed handgun carriers on their premises. It directly affects Texas businesses (like restaurants or retail stores) and license holders who carry concealed handguns legally under Texas law. The bill states that simply not posting "no concealed weapons" notices - rather than requiring explicit written or verbal permission - counts as allowing concealed carry, removing liability for damages from lawful concealed carry. The law takes effect September 1, 2025, and does not apply to incidents that occurred before that date.