MO SB53

Prohibits "proscribed investors" from bidding on or entering contracts with public entities for goods or services exceeding $1 million

Defines proscribed investors as entities that directly invest $20 million or more in Iran's energy sector, provide oil/liquified natural gas tankers or pipeline materials for Iran's energy sector, or are financial institutions providing $20 million or more in commercial loans for Iranian energy investments

Requires bidders with business operations outside the United States to certify they are not proscribed investors, with authority to reference lists developed by other states under federal Iran sanctions law

Imposes $250,000 civil penalty, contract termination, and three-year bidding ineligibility on entities submitting false certifications

Allows awarding bodies to terminate or refuse to renew contracts with entities determined to be proscribed investors, with 90-day written notice and opportunity for the entity to demonstrate it has ceased Iranian energy sector investments