You list Louisiana as your state, but you don't list the state that you were trying to execute the warrant in.  A civil warrant is usually good in the issuing state.  If your civil warrant was issued in Louisiana, then it will be effective in Louisiana.  Most states have similar "civil warrants" or "writs of attachment," which order law enforcement to assist the custodial parent in the return of the child.  You need to do is take your custody orders to the county where the child is being retained and file a similar motion and request like you did in Louisiana and have a civil warrant issued in that county as well.  Your current attorney may be able to request permission to file this motion in the other state.  If that state will not grant him/her permission to practice in that state, you may have to find a second attorney who handles family law matters to help you.