hell. in a moment, we'll speak with one of the governors, pete rickettes of nebraska. first let's bring in mark meredith at the white house with a look at the brewing battle. >> reporter: the president insists sweeping new mandates are necessary to convince some 80 million unvaccinated americans that now is the time to get the shot. but critics argue the president is overstepping his authority and they're vowing to fight back. >> we're playing for real here. this isn't a game. >> reporter: president biden is brushing off looming legal challenges to new vaccine mandates, he says starting soon, osha will require employers with more than 100 people mandate vaccinations or require employees who opt out to undergo weekly testing. more workers and contractors will be required to be vaccinated in order to keep their jobs and the tsa is doubling the minimum fine for travelers who violate the mask mandate. >> my message to unvaccinated americans is this, what more is