Blueskies writes:

Absolutely no need to provide 'special' protections. I just watched
Carl Levin (senator, MI) walking down a parade route the other day,
just walking along waving to everyone. No visible 'special' security
anywhere, and no TFR for sure.

Being a senator isn't nearly as important as being a Kennedy. Don't forget
the efforts made at taxpayer expense to find the last Kennedy who disappeared
in an airplane.