"The strategy to establish state laws that will make it all but impossible to sue oil and gas companies was laid out in detail by a group of lobbyists and political operatives in December, during a panel presentation at the annual States and Nation Policy Summit of the American Legislative Exchange Council — the influential organization that brings together state lawmakers, corporate leaders and conservative activists to draft and promote legislation."

https://www.propublica.org/article/climate-change-alec-leonard-leo-lawsuits-fossil-fuel-oil-gas-immunity

“Economic Civil War”: States Push Laws to Shield Oil and Gas Companies From Accountability

Most of the 15 bills being considered are part of a coordinated effort by groups linked to right-wing activist Leonard Leo.

ProPublica