cory: selina wang, keith rabois, we appreciate it very much.g up, how trump's visa changes could attract billions of dollars to the biotech industry. this is bloomberg. ♪ cory: the companies that power the more than $300 billion biotech industry in the u.s. >> to crank out discoveries, u.s. biotech companies rely on the world's best scientists and researchers. >> there is confusion right now and there's uncertainty. confusion and uncertainty are never good. >> he is the cofounder of a biotech incubator in cambridge, massachusetts. >> i came here from germany. i'm a green card holder. about 73% of the companies here at lab central were founded or cofounded by immigrants. >> the 28,000 square foot facility was designed as a launchpad for startups. >> they work on new technologies in life sciences, also new drugs to cure diseases or medical devices or tools for use in the laboratory. >> technology he fears is threatened by the administration's controversial immigration policies, including possible changes to visa programs. pres. trump: i will dire