STORY: Johnson, a Republican, added his name to those demanding Columbia University President, Minouche Shafik's resignation.
"My message to the students inside the encampment is to go back to class and stop the nonsense," Johnson said.
Shafik has been criticized by some prominent university donors and alumni groups, and members of the U.S. Congress, predominantly Republicans. Some have called on her to resign for failing to quell the protests, calling the encampment antisemitic.
Columbia is one of many campuses across the United States where debate over Gaza and the U.S. military support of Israel has grown heated.
