Scott Gottlieb on the FDA's decision to revoke emergency use of hydroxychloroquine

The Food and Drug Administration said it is ending its emergency use authorization for chloroquine and hydroxychloroquine, the anti-malaria drugs backed by President Donald Trump to combat Covid-19. Dr. Scott Gottlieb, member of the boards of Pfizer and biotech company Illumina and former FDA commissioner, joins "Squawk Box" to discuss.