ISDS was designed 50 years ago to protect business investments in developing nations where corporations feared they would face discriminatory laws or have their assets expropriated. Today, ISDS is no longer necessary. Corporations that invest in uncertain markets can buy political-risk insurance to protect themselves against the possibility of a loss. And investors in the United States know they face no such legal risk. ISDS should not be included in the TPP agreement—and in past agreements, ISDS provisions must be revised.