The CEO of T-Mobile and executive chairman of Sprint are set to be heard in front of House lawmakers February 13 about their proposed merger, but newly released testimony is already giving a glimpse into how the companies will make their case. In one word: China. In prepared remarks, T-Mobile CEO John Legere ties the proposed merger to “American innovation and national security,” and specifically argues that the merger will be necessary to make the United States a leader on next-generation 5G network technology.