Since the Department of Education began cracking down on the failure to report riches from abroad, colleges across the country have become much more meticulous in their disclosure of assets from foreign funding, with some digging up records dating back to 2013. A D.C.-based nonprofit has found that U.S. schools previously failed to report $1 billion, based on its comparison of the new disclosures with last year’s, now revealed to be massively incomplete. Of that $1 billion, “About one-third came from countries known for their influence operations in America,” according to the Clarion Project, whose research challenges “Islamism, white supremacy,...