1) Secret Service is afraid.
2) They don’t want to get bus-jacked.
3) They don’t have locking lugnuts on the wheels.
4) Barry hates those neighborhoods.
5) No good golf clubs there.
6) Commie leadership doesn’t live there; no one to visit.
7) Doesn’t know where those neigborhoods are.
8) Too many potholes, bus ride is uncomfortable.
9) Took buses there once, got lost, had a devil of a time getting out.
10) They were there but drove through, didn’t realize people lived there.
11) They ain’t got no money.