They disbanded the board looking into that on literally day 1.

In its first full day, the Trump administration axed all advisory committee members within the Department of Homeland Security, including the people that make up the Cybersecurity and Infrastructure Security Agency’s (CISA) Cyber Safety Review Board (CSRB). The CSRB was actively working on investigating Salt Typhoon, the Chinese state-sponsored hacking group responsible for breaches of at least nine telecommunications networks in the past several months.