Big data and associated technologies have enormous po tential for positive impact in the United States, from augmenting the sophistication of online interactions to enhancing understanding of climate change to making advances in healthcare. These efforts, as well as the technological trends of always-on networked devices, ubiquitous data collection, cheap storage, sensors, and computing power, will spur broader use of big data. Our challenge is to support growth in the beneficial use of big data while ensuring that it does not create unintended discriminatory consequences.