Subject: Re: Texiera on what the d's should do
It seems it was a staffer of Waltz's who made the mistake:

https://www.nbcnews.com/politi...

Trump's comments were his first substantive remarks since The Atlantic broke the story, which detailed how journalist Jeffrey Goldberg was inadvertently added to a group chat on a private messaging app where plans for military strikes in Yemen were discussed. Goldberg said he was added to the discussion after receiving a request from a user identified as Waltz.

When asked what he was told about how Goldberg came to be added to the Signal chat, Trump said, “It was one of Michael’s people on the phone. A staffer had his number on there.”