How Donald Trump changed Fox News

America's biggest cable news network, Fox, played a decisive role on election night in 2020. With early states seemingly falling Donald Trump's way, the network put paid to premature claims the former President would win by calling the crucial state of Arizona for his rival, Joe Biden. Despite pressure from inside the Trump campaign for a backtrack, Fox News stood firm. So why did some of the biggest commentators at Fox later peddle the lie that the election was stolen? Today on The Signal, we catch up with ABC 4 Corners reporter Sarah Ferguson. We discuss Sarah's latest two-part investigation into Donald Trump's big election lie, and ask why so many of the former President's media allies came on board. Did Donald Trump's lies change Fox? And if so, what does that mean for America? Featured: Sarah Ferguson, Reporter, ABC 4 Corners