Decision on Donald Trump’s Facebook Ban Is Coming on Wednesday. Here’s How It Will Work.

Facebook Inc.’s independent oversight board said it would issue a ruling Wednesday morning that could determine whether former President Donald Trump can return to the company’s Facebook and Instagram platforms. Facebook was among social-media platforms that suspended his accounts following the Jan. 6 attack on the U.S. Capitol by a pro-Trump mob.

Chief Executive Mark Zuckerberg has said the suspension was important to reduce the risk of violence through the inauguration of President Biden. The company later referred the suspension to the oversight board as the company grappled with how...