pratt barack obama has slammed what he calls hysteria of the supposed security threat posed by refugees entering the united states. one of the first states trying to impose a ban is texas. rob reynolds reports now from austin. >> at an islamic school and mosque in austin, texas, children play without a care. but many of their parents and other adults in the muslim community were jolted when texas governor greg abbott said syrian refugees fleeing civil war were not welcome in this state. he told president obama not to send any syrians to texas for fear they might include operatives loyal to the islamic state. this woman said that the governor is misinformed. >> these are people who are running away from isil, destroyed by isil. they're really victims. i don't see how these families we can portray them as being terrorists. >> there are a handful of recent syrian refugees in austin, but all those we contacted declining to interviewed, afraid relatives back home might suffer repercussions if they spoke out publicly. but all refugees are screened by several government agencies are before the

pratt barack obama was at the podium. >> i've come here personally as leader of the world's largest economy and the second largest emitter to say that the united states of america not only recognizes our role in reading this problem, we embrace our responsibility to do something about it. >> china was a villain of the peace at the failed copenhagen conference in 2009. since then they've come to the party but stress concessions still need to be made. >> it is imperative to respect differences among countries especially developing countries in domestic policies, capacity building and economic structure. addressing climate change should no re not reduce people's living standards. >> the question now is are they be backed up by their negotiating teams? activists say there has never been a better time for agreement, but there is still much to be done. >> we want our political leaders to realize that they've dragged their feet far to long and as a result too many lives have been lost, too much fertile land has been destroyed, too much flood and oceans rising, and they have to play catch up now. >