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hill hes facing a grilling from republican about the origins of covid-19. >> also today for the first time in history, the son of the sitting president of the united states is on trial. jury hey, selection now underway in hunter bidens federal gun case and history is being made. mexico elected its first female president claudia sheinbaum. well have a live report. >> hello, im wolf blitzer in washington and urine the cnn newsroom happening. now up, im capitol hill republican lawmakers a...

Subpoena from the republican-led committee turned up emails were dr. david borons appears appears to be trying to avoid public record laws cnns lauren foxes up on capitol hill for us, see then medical correspondent back tirrell is also joining us along with dr. paul off eddies, the director of the vaccine education center of the childrens hospital in philadelphia and a member of the fda vaccine advisory committee, lauren, what will republican lawmakers underscore in todays hearing? >> yeah. i ju...