That if you are a US citizen, and you want to bring you brother or sister to the United States to live, there is currently a 14 year wait for most people. If your brother or sister is from Mexico, there is a 22-year wait.
I hope this is interesting and helpful. Remember that this is not legal advice. It is just a summary of certain aspects of immigration law which may or may not apply to your situation. I encourage you to consult an attorney if you think any of this may apply to your situation.
Gunnar Armstrong