I do my part, as a European I actively boycott travel to the USA. There have been several opportunities for both myself and others to take trips to the USA, and I have proposed and worked with alternative plans every time. It's not a lot, but it's what I can do.
As long as the USA has insane paranoid immigration policies and the TSA I will not travel there, and neither will my immediate family. (I did go to Miami many years ago for a conference, but that was back when things were still sensible)
"Visa Waiver" my ass, that's just a visa-lite. If I need to apply to enter, they can forget it. The last countries I needed to request a visa to enter were Mauritania, Mali, and Burkina Faso, and as far as I could tell that was just a glorified way of squeezing extra cash out of visitors - and at least they didn't demand fingerprints and invasive grilling by border-guards. Mauritania border guards just wanted a small cash donation, and the others were happy with a ballpoint pen, an apple (he actually wanted sweets, but all we had was fruit) and an empty fuel-canister.