I used the Canadian Express entry system and migrated to Canada within months. I hope & encourage every talented immigrants in the US who are being discriminated based on the country of birth (rather than their skills) to follow suit.
Do not trust an immigration system based on lottery. Trust an immigration system like the Canadian Express Entry based on points which do not discriminate a person for his/her country of birth.
Its absurd and plain stupid that the green card quotas are country based for skilled immigrants in the US ! In Canada, even a temporary worker's spouse can work right from the day they land.
Express Entry is humane & values your skills period.