This would establish a strictly non-partisan committee to screen all campaign ads and give a stamp of approval or rejection (or even a scale of completely false to completely true). It would include a website that would fully explain the context of why they made the decision that they did.
If the committee gives the ad a good rating, people are aware the ad is true, and can follow a link to an explain of why it is true.
If the ad is given a poor rating, the committee doesn't need to take it off the air (or take down the poster, online ad, etc.), they could say that this ad contained false information with a link to a website that would fully explain why it was false.
We must demand the truth from those who seek to take on the important role of representing us in our government.