GOP Texas Rep. Mike McCaul told CNN Biden's investigation was 'overdue' He also called for the US to stop buying medical supplies to China in response The Senate has already adopted a resolution to stop funding the Wuhan lab Dr. Scott Gottlieb, Trump's FDA commissioner, says leaks 'happen all the time' He said even in the US there are accidents that could cause this outbreak Lawmakers from both parties are demanding a probe into COVID's origins