To obtain an MMJ card in the United States, you must first consult with a licensed physician who is registered with your state's MMP. The physician will evaluate your medical condition and determine if you are eligible for an MMJ card. After receiving a recommendation from the physician, you will need to register with your state's MMP and submit any necessary documentation. The procedures and qualifications vary among states, so it is recommended to check your state's specific regulations. Upon approval of your application, you will receive an MMJ card, enabling you to legally purchase and possess MMJ in your state.