Bonds; create rural counties and municipalities cellular and broadband grant program and authorize issuance of bonds.

HB 543 creates a grant program to help businesses expand cellular and broadband access in Mississippi's rural areas. It directly affects businesses operating in counties with ≤30,000 people or municipalities with ≤10,000 people, as defined by the latest census. The Mississippi Development Authority (MDA) will administer grants covering up to 25% of project costs for infrastructure improvements. The program is funded by $15 million in state bonds, with unspent funds rolling over annually instead of lapsing. The bonds must be issued by July 1, 2029, to support this initiative.