If you are charged with DUI out-of-state, you will be required to abide by the laws of the state where the offense occurred.
Therefore, if a Mississippi driver is arrested for DUI in Tennessee, they will not be able to pursue non-adjudication. Instead, they will bear all the consequences of a DUI charge in the state of Tennessee. This includes jail time, fines, license suspension, and attendance at a Victim Impact Panel.
On the other hand . . .
If a Tennessee driver is arrested for DUI in Mississippi, they will be eligible for non-adjudication.
When it comes to license suspension, the rules become less clear. Sometimes, DUI offenders have their driving privileges revoked in one state, but not the state that their license is from.
For example, a Tennessee driver convicted of DUI in Mississippi will likely have their driving privileges revoked in Mississippi. However, their license may remain unaffected in Tennessee.