If you were a resident of Louisiana, you are allowed a credit for the net income tax liabilities paid to one or more states of the United States provided that you have reported that income on your Louisiana return.
Please note the "net income tax liability" is generally not the amount withheld. You may not claim credit for taxes paid to cities, the District of Columbia, or foreign countries. The credit allowed on your Louisiana return must be for the same taxable year for which the tax was paid to the other state(s).