Hosts at Fox News had serious concerns about allegations of voter fraud in the 2020 presidential election being made by guests who were allies of former President Donald Trump, according to court filings in a $1.6 billion defamation lawsuit against the network. “Sidney Powell is lying,” about having evidence for election fraud, Tucker Carlson told a producer about the attorney on Nov. 16, 2020, according to an excerpt from an exhibit that remains under seal. The internal communication was included in a redacted summary judgment brief filed Thursday by attorneys for Dominion Voting Systems. Carlson also referred to Powell in...