more. >> reporter: the white house is again considering a proposal that would include vaccinating migrants crossing into the united states and then later released into the country as they await their court hearings. it was a plan that was the source of tension among white house officials last year, including top white house officials ron klain and susan rice, who ultimately shut down the proposal because they saw encouraging migrants to come to the u.s./mexico border whereas others said it would address public health concerns. and then a white house spokesperson telling me, quote, a decision on vaccinations for migrants has not been made at this time just as a decision hasn't been made right now. but it's telling of what the concern with influence on policymaking. with officials internallies asome sought more progressive objectives and other officials