That and the deliberate lack of record keeping.
Attorneys suing the United States government over its use of vanishing Signal messages to coordinate military strikes last month in Yemen allege that new court filings by the government reveal a “calculated strategy” by Trump administration officials to evade transparency laws through the illegal destruction of government records.
The use of the private group chat—in which some messages were configured to automatically delete before they could be archived—was first revealed by The Atlantic’s editor in chief, Jeffrey Goldberg, on March 24, after he was inadvertently added to the group by Trump’s national security adviser, Michael Waltz. American Oversight subsequently filed Freedom of Information Act requests over the chats and then sought a temporary restraining order in a Washington, DC, federal court in an effort to compel the government to salvage any messages yet to be deleted.
~ https://www.wired.com/story/heres-what-happened-to-those-sig...