CNN  —  In a matter of days, millions of students will be finalizing one of the biggest decisions of their lives: what college they will attend. The choice could prove to be even more daunting for international students hoping to study in the United States, as the Trump administration revokes hundreds of student visas and admonishes colleges that don’t adhere to its policy demands, threatening to pull billions of dollars in funding and at least one school’s ability to host foreign students .