Employees work at a Shuanghui International pork processing plant in Henan province. The sale of Smithfield Foods to China's Shuanghui International is under scrutiny in Washington because of national security concerns about a Chinese company owning an important U.S. food producer.

Employees work at a Shuanghui International pork processing plant in Henan province. The sale of Smithfield Foods to China's Shuanghui International is under scrutiny in Washington because of national security concerns about a Chinese company owning an important U.S. food producer.