I'm no expert, but I've read Roth IRAs are better because they don't count for assets for financial aid qualification. I believe you can pay your kid the $5250/yr and contribute it to their Roth. Someone correct me if I'm wrong.
Remittances are extraordinarily common for all immigrants, and it always has been. There is a lot of research on the topic, but it isn't surprising that people who move here send money back to their home countries.