Let’s say you’re a mega wealthy billionaire who has suddenly realized that if he cozies up close to a presidential candidate, he could have more power and wealth than ever before. What’s stopping you from figuring out who the electorates are and offering them whatever they want if they vote for your guy? What’s stopping them from taking the deal?
Other than all of 1 breaking the law 2 getting caught and 3 there being at least one person with an ounce of integrity to uphold said law.
So basically nothing anymore.