Food and Agribusiness Merger Moratorium and Antitrust Review Act of 2019 This bill places a moratorium on certain acquisitions between large agricultural and retail-related businesses and establishes the Food and Agriculture Concentration and Market Power Review Commission. The commission shall report to Congress and the President on (1) the nature and consequences of market concentration in the U.S. food and agricultural economy, and (2) recommended legal and regulatory changes to address such market concentration.