This is a good question:

Why Did 2 Chinese Nationals Try To Smuggle An “Agroterrorism Weapon” Into The U.S. That Could Devastate Our Food Supply?

From the article:
On Tuesday, we learned that a pair of Chinese nationals have been arrested for attempting to smuggle “a dangerous biological pathogen” into the United States …

Federal authorities in Detroit on Tuesday announced charges against a Chinese scholar at the University of Michigan and her boyfriend, a scientific researcher, for allegedly conspiring to smuggle a dangerous biological pathogen into the U.S.—a pathogen capable of damaging agricultural crops and causing illness in humans and livestock ...

Our enemies have been embedding their agents in our colleges and universities for decades.