an 'axe to grind' with Fauci...Mullis ventured out of his realm to take him on during the HIV/AIDS days, when he (Fauci) was responsible for making tremendous strides in controlling and treating that disease...not sure why he (Mullis) did this, but the medical community had no problem siding with Fauci.
Link: https://en.wikipedia.org/wiki/Kary_Mullis