Dr. William:

My company has several branches in different states in US. Is it possible for me to apply for the I-140 NIW at another USCIS service center not covering my current working site, because of the fast processing speed? Thanks for your response. 

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Answer:

You are allowed to file the I-140 petition in the jurisdiction either where the employer is located for employer sponsored application, or where the you live in self application. Unless you have filed AR-11 for changing address, you should not try 'forum shopping' for fast processing, to file an application with another USCIS service center not having jurisdiction over your area.