biden for businesses with more than 100 workers to mandate vaccines. overall, 55% now approve of president biden's handling of the pandemic, 11 points more than those who disapprove. but in june, his approval margins was 30 points. we'll have more fox polls throughout the hour. and we'll discuss the controversy over vaccine boosters with dr. fran sigh collins, director of -- francis collins, director of the national institutes of health. let's get the latest from mark meredith, traveling with the president in delaware. mark. >> reporter: for months the biden administration has been making plans to distribute millions of covid booster shots, the rollout was set to begin this week. now the plans are in limbo as a key group of scientists determined most americans don't need the shot. with a 16-2 vote, an fda advisory committee decided against recommending most americans get a third dose of pfizer's coronavirus vaccine. >> i just don't think we're