Lying Presidents

Is it ever okay for your presidents to lie to you if they genuinely believe it is in the best interest of the country?
Personally, I'm okay with that, even if it turns out to be a colossal mistake. All I ask is that smart people did their best to get it right. Hey, no one is perfect.
That's why I can't generate any genuine anger toward our current bumbling government despite the fact they steered the economy into a ravine. I actually think they were trying to do the right thing as they saw it. And if they weren't smart enough, the voters have to be blamed for that. Our politicians didn't get any dumber after being elected. We knew what we were getting.