[jessaustin]

TFA: If the ad were selling a house or recruiting for a job fair, it would almost certainly be illegal.

We have laws about that stuff, for good reason. They don't address political speech, however, and probably wouldn't pass constitutional muster if they did. This is the sort of tawdry viciousness we've come to expect from Trump, but it's solidly within the "marketplace of ideas". The only way to respond to this is with opposing targeted ads.