This visa restriction suppose don tey self, so that all of dem wey de run go stay and develop other people country leave their own go learn lesson small.
Wetting de vex me be say even our leaders wey supose lead by example de go treat himself abroad because dem no gree repair our own hospitals, and dem de send their children go school for there because dem know say dem no structure our own educational system well.
As much as I like wetin the US don do, e go still make sense if other countries like UK, France, China, Japan, UAE, Saudi Arabia, Qatar, Korea and all these other nations fit do the same. But e go hard because even some of these other nations dey benefit from these guys big time. E go also make sense if the visa restriction fit touch their family members as well - their wife, children too.
Meself de support dis one, so that dem no go get choice then repair and set our own hospitals and schools under good condition to attract people from countries to come and study here with us.