Republican lawmakers at times raised their voices at the nonprofit’s leader, Peter Daszak, and said that they believed that he would fare poorly as a defendant in criminal court. EcoHealth Alliance, which receives federal funding to study global threats from wild animal viruses, has faced suspicion over a proposal that it made in 2018 to team up with Chinese scientists on novel coronavirus experiments that Republicans believe could have led to the pandemic. But in a report and in extensive questioning on Wednesday, the Republicans offered no