Join the club: Collison is hardly the only Silicon Valley entrepreneur to sound the alarms on current efforts to limit immigration of all kinds, even those coming here for high-skilled jobs. Investors and entrepreneurs told Axios that Trump's proposed reforms to the H-1B visa program could hurt startups, and Box CEO Aaron Levie told Axios that restrictionist immigration policies will make foreign students reconsider coming to the U.S. "If we don't have this talent, then we don't have places like Silicon Valley or New York or Boston that are building these really great communities of innovation," he said. "If you're not the best place for immigrants, then you don't win in the digital economy."