美国高级行政官员：美国与欧盟同意简化美国猪肉和乳制品卫生证书的要求。

Group 1 - The core point of the article is that the United States and the European Union have agreed to simplify the sanitary certification requirements for U.S. pork and dairy products [1] Group 2 - This agreement is expected to enhance trade relations between the U.S. and the EU, potentially increasing exports of pork and dairy products [1] - The simplification of certification requirements may lead to reduced costs and time for U.S. producers, making their products more competitive in the EU market [1] - The move reflects ongoing efforts to strengthen transatlantic trade ties and address regulatory barriers [1]