A federal watchdog announced on Tuesday that it was starting a review into how the National Institutes of Health manages its grant program, an investigation that likely includes funding given to a Chinese laboratory at the center of COVID-19 questions. Republicans have scrutinized NIH grants to EcoHealth Alliance, a scientific nonprofit that has helped fund research at the Wuhan Institute of Virology. The review comes amid growing questions about whether the pandemic could have begun with a leak from the lab and whether scientists there were using American money to conduct 'gain of function' experiments on viruses.