I doubt this is the case...there are quotas on green card lottery but I don't think there are here. Just because someone is not from high immigrant countries such as Mexico, China or India, does not mean that person's case gets processed quicker.
If that was the case, USCIS would process so few cases as most of the applications are most likely from these 3 countries above.
If that was the case, USCIS would process so few cases as most of the applications are most likely from these 3 countries above.