The Supreme Court cast doubt Monday on state laws that could affect how Facebook, TikTok, X, YouTube and other social media platforms regulate content posted by their users. The cases are among several this term in which the justices could set standards for free speech in the digital age.

In nearly four hours of arguments, several justices questioned aspects of laws adopted by Republican-dominated legislatures and signed by Republican governors in Florida and Texas in 2021. But they seemed wary of a broad ruling, with Justice Amy Coney Barrett warning of “land mines” she and her colleagues need to avoid in resolving the two cases.

While the details vary, both laws aimed to address conservative complaints that the social media companies were liberal-leaning and censored users based on their viewpoints, especially on the political right.