Trump suspended the loophole in February for China, Mexico and Canada, but he reinstated it to allow Commerce Secretary Howard Lutnick to establish protocol for collecting tariff revenue on low-value imports that would be eligible for the exemption.

The Trump administration has frozen more than $300 million in National Science Foundation, National Institutes of Health and other federal agency-funded research at UCLA, citing allegations the school discriminates in admissions and has failed to protect the civil rights of Jewish students.