Top executives from Facebook and Twitter said Wednesday they would be open to discussing changes in a 1996 law that immunizes social media against lawsuits over posts by the platforms’ users.

Known as Section 230, the measure in the Communication Decency Act has widespread support among technology companies and has been used to push back against congressional attempts to strengthen industry oversight. Several firms, for example, opposed legislation earlier this year forcing websites to take greater responsibility for content related to child sex trafficking because of how it might curb Section 230 immunity, though President Trump still signed the bill into law.