Russia has banned imports from 19 U.S. poultry suppliers as of Monday and could add another 29 companies. Russian officials say the ban was issued because those companies use antibiotics and other chemicals in their products. However, American officials say the ban is in retaliation to U.S. officials criticizing Russia for the use of military force against Georgia. Among the companies targeted in the ban were Tyson, Peco and the Equity Group.