Over 95% of disrespectful nairalanders who just insulted the Prof. are children and grandchildren to him on a age scale.
A man at the age of 82 years told us that electing trump means its time to come home. With his age and reputation, really
what does the American green card add to him.
At 82 he is clearly not working for money, schools all over the world fight to put him in lectures. If tomorrow he decides to
apply for a visitors visa to the U.S, he will be granted (sorry if your application has been rejected ten times).
Not everyone sees the American green card as the gateway to heaven.

Don't know why dumping his green card is a big deal to many. It's a personal decision. Folks better respect that

Well said