A container ship makes its way through Hong Kong waters as it leaves the territory. China hit the breaks on a free trade drive in 2003, the US charged in an annual report.(AFP/File/Peter Parks) China hit the brakes on a free trade drive in 2003, jamming up the process in a bureaucratic mangle, the United States charged in an annual report released. China had removed many obstacles to commerce since joining the World Trade Organization (news - web sites) in December 2001, the US Trade Representative's (USTR) office conceded in a key global report. But "substantial barriers" remain, said...