we're not allowed to know that. remind the people watching tonight why that would be really important to know. >> listen, at the end of the day his last negative test is useful knowledge to be a part of the clearance mechanism. but i wish we would actually frankly move away from asking that question. it last time the test is helpful as part of the clearance mechanism, but the most important part is let's start the clock from the on set of symptoms. that's what really matters to me. 20 days from the on set of symptoms is what matters now. he could have a positive test, brian, he's 74, has comorbidities. we know individuals in that profile could test positive for 55 days potentially. so honest his last negative test, he may not have a negative test until well after the election. so let's start asking the right questions. the reporters should be asking why aren't you isolating for 20 days? that's what his own cdc wants.