Grants from the National Institutes of Health have helped create breakthroughs in cancer treatments, heart disease and vaccine development. But scientists from some of the nation's top medical labs are warning that the Trump administration's plan to cut $4 billion in funding for equipment and research staff could jeopardize medical progress.

The Trump administration recently announced the National Institutes of Health will make big changes in the way it funds researchers. Scientists say the move will have a huge effect on their work. We hear from medical researchers about the cuts and Amna Nawaz discusses more with Dr.