Trade chief says deal could add $52 billion in U.K. trade.
Two countries reach agreement on final protocol, USDA says.
Canadian Prime Minister Justin Trudeau says he will continue to defend the supply management system that protects the Canadian dairy industry in talks about revamping the North American Free Trade Agreement.
U.S.-China relations tense amid sanctions related to North Korea.
Business, agricultural and education groups are joining forces to expand Nebraska's reach into international markets that generate billions of dollars annually, Gov. Pete Ricketts announced Thursday.
U.S. beef has made its way back to grocery stores and menus in the most populated country in the world, China.
Imports of fresh Brazilian beef have been suspended by USDA over safety concerns.