I have recently had an attorney assist in my application for permanent residency in US. Since this will replace my current work TN VISA (temporary VISA), is the attorney fee a deductable expense on my tax?

Yes, on Form 2106 for Employee Business Expenses and then on Schedule A as an itemized deduction.

I have recently had an attorney assist in my application for permanent residency in US. Since this will replace my current work TN VISA (temporary VISA), is the attorney fee a deductable expense on my tax?
No. You might be able to claim the work visa expenses but the expenses of acquiring permanent residency are personal expenses and not deductible.

TaxSearcher is right, and I am wrong! :-(

I misread the posting and thought you were applying for a work visa.