There's no problem it's just the way it is when so many have applications to immigrate to the US. It takes about 2 years all together not much you can do about it.
Like El Tigre said Mr Guzman doesn't anwer questions about US immigration visas.
Have a look at this website
dominicanstotheusa.com :: Index people there can tell you more about the wait time.
Be patient and good luck.