Start shooting them when they lie - that will make them pay attention right quick. Unfortunately there is a downside to that approach ...
Else get used to it - all politicians lie all the time. How else are they going to tell everyone what they want to hear so they can get elected/reelected and stay in power long enough to have a multi-million dollar pension with medical care unavailable to the riff-raff?
Short of that, get the barricades up and begin the revolution - with absolutely no guarantee that you will survive or even win.
Or people can start taking ??courses?? (since they seem incapable of learning in daily life) on how to judge a person’s character and intent regardless of the words spoken.
Or just throw up one’s hands, since all of the above is far too time consuming & plain difficult and go back to watching the Kardashians ...
If they don’t keep their word we’re going to elect people like Trump - a man who WILL keep his word.
Then we’ll start going down the list and seeing who is making an attempt to secure our borders - and if they’re NOT doing that - we’ll run someone against them.
That’s how the system works... slow to create ‘the good’ and slow for the bad guys when they want to create evil.
It’s a nice system - not the best - just the best that exists in our world.