The program was already highly competitive, w/just 16% of applicants getting fellowships, because the 3 yrs of unrestricted financial support it offers can be what it takes to get into a certain grad school, or to study w/ a particular mentor or in a particular lab—or, in some cases, to pursue a line of inquiry that might not have support elsewhere.
Now even fewer of the nation’s most promising scientists-in-training will get that funding.