In the US - they will tell you that there is no 'quota' system.
reconcile the quota system to the first law of the labour force in nigeria
The Emergency Quota Act.
partial quota reservation system
I think it is Quota Management System! ( biology)
That would depend on which quota systems you were asking about (you have not made this clear in your question), I do not oppose quota systems in general but made do so in specific cases.
Immigration in the U.S.
Quota System
Around 1998
gaven
The enactment of a quota system
The quota system set a limit on how many immigrants from each country could enter the U.S. every year. The main goal of the quota system was to limit immigration.