> Targeting them with what?

> What could possibly hold enough leverage that Visa would jeopardize their sweet gig as an ideology-neutral, essential piece of American infrastructure siphoning 1-2% off of every dollar of consumer spending?

The US courts.

Visa was specifically pulled into the lawsuit against PornHub; here's Visa's official statement on the matter: https://corporate.visa.com/en/sites/visa-perspectives/compan...

The lawsuit is still ongoing.