post again, please share

Hi, friends:

I will 485 soon, but I also need to mail a big check to China to help on friends business, I heard that some agent (I don't know if FBI or whatever) will check the transactions if it's a big amount of money. I don't know if it's true or not. Will someone has similar experience reply me? Do you know if that will affect my name check for 485?

Highly appreciate!