anyone boarding an international flight to the u.s. must ve received a negative covid test no longer one day before takeoff. this applies to everyone 2 years of age and older, both u.s. citizens and those who are fully vaccinated. let s get right to cnn s nadia romero in atlanta. what else do we need to know about these new travel restrictions? we have to realize that this is all very fluid, meaning that these travel restrictions could change. we could see more restrictions or fewer restrictions in the coming days or weeks. and we re hearing that from dr. anthony fauci and from dr. rochelle walensky over cdc. they say that we just don t have enough data to really know all we need to know about omicron and its spread, how transmissible it is. so as that data comes in, the biden administration says this is their best bet. this is what they believe that they need to do, which is why they enacted this new travel policy that will take effect tomorrow for international travelers making the