Emissions and insurance did it, but obviously if you are going to actively try to curb something, you do it without directly addressing what your concern is. I'm not saying that is necessarily true with the emissions and insurance, but you could take almost any law and spin it to sound like you are doing it for reasons other than your true intentions. Just take a look at obvious ones like voter suppression, "right to work" laws, etc. I could list at least a dozen, but none of them are safe from offending someone.
My point is simply if ICE manufacturers cannot beat EV's, they will support and promote regulating the ability of EV manufacturers to best them with acceleration. Something as noble sounding as placing a cap on acceleration. A cap that ICE just happens to be able to reach easily. Lobbying power has historically been the gate keepers that hinder anything from upsetting the balance of power. If they cannot compete with EV, they will try to hinder the industry.
There are already mechanisms in place to hinder Tesla. Things like rent seeking practices of requiring a dealership to sell a car in a state. And the tax credit bill has deductions for buying from a union built manufacturer. You know, basically every car manufacturer in the US except Tesla. Lobbyists for the auto industry had a hand in that one. If they think regulating the power of an EV will give them an advantage, it will definitely be considered.