The company says it believes "online platforms should be more accountable for, and more transparent about, the decisions they control that fundamentally shape how we communicate."

AT&T, which has its own rivalries with social media companies, said it will argue that Section 230 has enabled "gross disparities in legal treatment" between the dominant online platforms and traditional publishers like newspapers and television businesses.

In some ways, it's unsurprising that AT&T would come out in favor of an order that targets social media networks, considering it is currently battling Google and Facebook for advertising dollars. But it's a hefty boost for Trump's Section 230 cause nonetheless, as AT&T wields considerable power in Washington, D.C.