You're right, I would have been more correct to have said "many immigrants" just with the population of PRC alone. Venezuela may be added to that list in the near future.
PRC has experienced economic reforms, but there is still no genuine freedom of religion, and they still force abortions and sterilizations on women.
Video of PRC government destroying a church
www.persecution.com/china/
Chinese Woman Arrested for Protesting Her Forced Abortion Tortured in Prison
http://www.lifesite.net/ldn/2006/apr/06041007.html
I have no argument with you about the oppression that still exists in PRC...but it is far less severe compared to the economic and cultural oppression that the Cuban people experience every day of their lives in Cuba.
Cubans should be allowed every opportunity to escape from that gulag hell. That some think not reflects on their ignorance and prejudices.