Cullors' work has largely surrounded combating anti-Black racism.
Penn State will also adopt a 96-hour quarantine period for print or physical materials.
Newly enrolling students can enter the United States as long as their respective universities provide them with at least one in-person class.
Penn State students may have a tougher time getting around campus this fall.
"If we are to be successful in our plans to return to teaching, learning and working on our campuses this fall, each one of us must take actions now."
Associate professor Eliyana Adler hopes to educate Penn State students through the Holocaust and Genocide Studies Certificate.