Can we just ponder for a moment that we are being asked to believe that anything Twitter does or does not do could pose an existential threat to the United States? “National security” is a sham now and has been a sham every other time it has ever been used as a blanket override for human rights. Human rights to free expression are more important than any nation. This is just government spies trying to cover their ass…
Alternatively they justify some actions with the war on drugs or fighting against pedophiles with: "think of the children".
If you promote strong encryption you might help drug dealers, pedophiles and terrorists.
There's also the preaching: "you shouldn't be worried of us spying if you have nothing to hide".