A hidden scheme draining millions from the federal student aid system and infiltrating college campuses has emerged as a key target of the Trump administration's fraud crackdown, with officials faulting Biden-era identity verification policies for opening the door to it.One fraud expert is now highlighting the red flags students and parents must look out for as the fall semester begins, warning fraudsters are fabricating identities to enroll at colleges and collect aid that is meant for legitimate students."People, scammers specifically, look for vulnerable places like student loans and unempl...