Society Brides

I was researching brides and found that even in other countries from the Philippines Philippine brides. In Hong Kong, Malaysia, Indonesia and Singapore. They all said to the Philippians. These listings in many Russian and Latina in the 1000s. Why do Filipina women the largest cultural group brides for American society?
In other words, why Filipina women so hard for Americans?

This is because they want to raise their family in the mud of poverty and the best solution for them is to find a foreign husband, like Americans ...

They are not difficult for American men. They just want to leave the Philippines.
There are a lot of poverty in the Philippines, so when a family member leaving to work abroad, he or she can send money to the rest of the family.

Their culture does not protect them or give them other options in life? I do not think anyone wants to be a mail order bride. I think the "difficult" to chance, not for American men.