https://www.cnet.com/news/t-mobile-and-sprint-execs-to-defend-merger-on-capitol-hill/

The execs are likely to answer questions about how the merger will affect consumer pricing and competition in the wireless market, as well as questions regarding the companies' involvement with Chinese telecom gear maker Huawei, which was indicted on 23 criminal charges Monday for stealing trade secrets from T-Mobile and committing bank fraud by violating sanctions against doing business with Iran.

"A merger between T-Mobile and Sprint would combine two of the four largest wireless carriers and the carriers with the largest numbers of low-income customers," the committee heads, which each have oversight of the Federal Communications Commission and the Department of Justice, two agencies that must sign off on the merger.