Signal doesn't abide by the records keeping act and is definitely not approved...I dont know what you are talking about
Signal is authorized for official government business
All of which is confidential
Signal is also hacked by the Russians...

Warning over privacy of encrypted messages as Russia targets Signal Messenger | Computer Weekly
Russia-backed hacking groups have developed techniques to compromise encrypted messaging services, including Signal, WhatsApp and Telegram, placing journalists, politicians, and activists of interest to the Russian Intelligence service at potential risk.
Are you saying that the Trump Admin approved a platform hacked by US enemies... The incompetence is getting worse...
Again look at Mac-7 here, he is still say it is alright...
He and the rest of MAGA is approving them to make mistakes that go lower... Using Signal is alright even if it is hacked...
We are not at rock bottom...