Rush is a blowhard, and he is not going to move anywhere.
He has millions, why on Earth would he leave the country because of a medical plan that he can easily supplant with his bug bucks if he does not like it. As it is, the Bahamas, which has excellent doctors, is a 30 minute plane ride away from Palm Beach, where Rush basks in luxury. I bet they could even prescribe Oxy-Contin for him. Of course, the Bahamas has a majority of Black people, which probably does not impress Rush. But there are a coule of mostly White islands there.