That's a tough call. If you respond to every charge that's all you do.
Darn near to the 24/7 job of raising kids right, ain't it?
This is not every charge. This is a big irresponsible charge that is being repeated everywhere and that they intend to base their whole effort on. You don't sit on your hands for that. The democrats get mileage out of these things because the republicans let them. And the country is not served by tolerating charges the president is a racist murderer.