And note, if a 'kill switch' is ever required, the agency that will enforce its adoption by ISPs? Just as with wiretap requirements and broadcast language/content censorship, the FCC.

Remember that before cheering on the FCC to have authority over which ISPs are sufficiently 'neutral'. (And don't be surprised when 'neutral' gets redefined over time into 'compliant with the FCC's political biases'.)