The Hechinger Report is a national nonprofit newsroom that reports on one topic: education. Sign up for our weekly newsletters to get stories like this delivered directly to your inbox. Hispanic-serving institutions are rapidly growing in number, but the federal aid available to them is shrinking almost as fast. A section of the Higher Education Act has reserved $100 million annually in competitive grants for HSIs to increase the number of Latino students with bachelor’s degrees in science, technology, engineering…