Per statue, Tennessee has the authority to punish a Tennessee license holder per Tennessee's standard no matter what jurisdiction the conviction for DWI or DUI is received. Tennessee will suspend the license for at least a year if this is a first conviction. However, the statute also allows for a Tennessee resident to apply for a restricted license in the general sessions court of the resident's home county. The resident will have to provide the judgment sheet from the foreign court and the judge has the discretion to grant the restricted license.
I am not licensed to practice in Tennessee, however, the general answer is yes. it will affect your TN license. Tennessee's lack of membership in the Interstate Compact is only relevant toward sharing information about DUI's within TN and yours was not within TN. As Mr. Vaughan has ably pointed out, TN can suspend your license, but you may apply for a restricted license if this is a first-time offense. Good luck to you.
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