If you are not licensed in your country, you must definitely get a J.D; however, after your first year of law school, you may be able to receive 30 hours of credit for your prior law school work.
If you have practiced in your country for 5 years of the last preceding 7 years; from a common law country; or have an LL.M., then you may be able to take the bar. Contact the Board of Law Examiners to confirm the rules (512) 463-1621 or https://www.ble.state.tx.us/