The big picture: Some current and former members of the Trump Media & Technology Group were also subpoenaed, but specific names were not disclosed. Why it matters: The investigation continues to expand and could delay or prevent TMTG from going public.

In the past, summonses have been issued for members of the blank check company. At issue is whether or not Digital World Acquisition held merger talks with Trump Media prior to its own IPO, which would have violated securities laws. Trump Media operates the Truth Social app, led by former Rep. Devin Nunes (R-Calif.). It also has ambitions to expand into video and other media.