The fact that a former president has so much security points to the real problem - the position of President in the US has been king-lite for a while now and Trump didn't even start it.
Making everything in your country depend so much on one person is not healthy.
Um, Chernobyl is still extremely radioactive. You probably mean the exclusion zone which is really not that bad, there's even tourists going there. But it's still not recommended to live there due to cumulative exposure.