The video is the best TLDR

Basically, there were certain provisions in the Patriot Act which placed some reasonable restrictions on what the state could do in terms of mass surveillance. These have been lifted and no longer apply.

The most concerning part imo is that mass surveillance and signals operations no longer must only be for counter terrorism or counter intelligence purposes. Also, no care needs to be given to protect identities or privacy of individuals who are targetted by surveillance.

In addition, racial/gender/sexual orientation/religion can now be used as criteria for setting up signals intelligence operations.