No son adivinos. My ex solicited her aunt years ago. She was approved and stayed with us for the three months. Went home on time, followed all the rules. When she went for another one a few years later it was denied. No reason given. There appear to be monthly allowances or quotas in place. As mentioned, they get lied to all day long. At some point, it must get hard to sort it all out.
i read a posting from a member of a forum who stated that one of the reasons why Dominicans have such a hard time with immigration issues is because between 60-80% of all applications have falsified information, and Homeland Security is not amused. i think i read it in this site, come to think of it.