The new pledges, timed to coincide with the opening in Thailand of the six-day 15th International AIDS Conference, came as a new opinion poll showed the Massachusetts senator widening his lead over President George W. Bush (news - web sites). Kerry welcomed the upcoming conference and promised to work with US international partners, faith-based and non-governmental organizations to strengthen the world's capacity for a sustained response to the AIDS epidemic. But in his statement, he also made a commitment that is likely to draw more fire from conservative groups insisting on tighter immigration requirements. "I will work with Congress to...