China could enter the World Trade Organization by the end of the year, if the momentum of negotiations is sustained, this according to Charlene Barshefsky, the U.S. trade representative. However, significant work needs to be done on a number of issues to secure Chinese entry, she said. The U.S. and China failed last week to agree a deal on WTO entry that would have capped a summit meeting between President Bill Clinton and Zhu Rongji, the Chinese premier.