Hiring a local immigration attorney is not necessary for most immigration cases. However, some matters such as a marriage-based case where an interview will be scheduled at the local USCIS office are best handled by a local immigration attorney who is familiar with the local office procedures. Additionally, many people like to meet with their attorney in-person and therefore, prefer to hire a local attorney. Most attorneys are very good about letting you know if you would be better served by...
You can add her to your I-589 application at anytime with proof that you are legally married. However, she won't derive any asylee status until your case is approved. I strongly recommend hiring an immigration attorney to help you with your case.
You will need to consult with and hire an immigration lawyer to help you with this matter. The lawyer should be able to identify all options available and help you decide which one makes the most sense for you.
I would recommend filing for an EAD card and Advance parole, even if you decide to continue working and traveling internationally on your L-1A visa. The $1070.00 filing fee for the I-485 application includes the filing fees for both the I-765 and the Advance parole and all renewal fees for those applications. It's a good deal! Additionally, if your job situation changes, the EAD and Advance Parole may come in handy. I would discuss this further with your company's immigration attorney.
I would recommend that your employer consult with an immigration lawyer to see if other options visa options are available. The H-1B visas for private employers have all been used for this coming fiscal year.
I would recommend consulting with a US immigration lawyer to explore all the options that might be available for your brother. Your mother and father won't be able to apply for his permanent residence until they become citizens and the wait line is very long for this category. Thus, you may want to explore other employment-based options.
I would hire an immigration attorney to help you with this. Based on the information provided, this may be a complicated process. Most attorneys charge a consultation fee and then after they have all the information they will be able to discuss options and fees for representation with you.
In Denver, there is a process to transfer obligors through Denver ICE. I would recommend consulting with a qualified immigration attorney located in Denver, CO who is familiar with Denver ICE procedures.