Production was halted 2 weeks into filming season 4 due to the Coronavirus Pandemic that began in 2020.
When told she can't smoke in the building, Serena says, "Are you going to charge me with smoking now?" Sharon Stone used essentially the same line in Basic Instinct (1992).
Mckenna Grace and Elisabeth Moss had recurring roles as the youngest child of the President of the United States. Moss as Zoe Bartlett on The West Wing (1999), Grace as Penny Kirkman on Designated Survivor (2016).