U.S. senator John Cornyn speaks during a dialogue at CERAWeek conference in Houston, Texas, the United States on March 15, 2019. The United States and China need to work together to find ways for both to prosper, John Cornyn told an energy conference on Friday. The five-day CERAWeek gathered more than 4,500 guests and speakers in the energy, technology and financial sectors from more than 70 countries and regions this year. (Xinhua/Liu Liwei)?