“Green Book” writer and producer Nick Vallelonga has been a staple on the awards circuit this Oscar season, earning screenplay nominations from the Golden Globes, the Writers Guild of America, and the Critics’ Choice Awards, but, in the wake of awards buzz, a controversial social media post published by Vallelonga in 2015 has resurfaced online. Vallelonga is the son of Frank “Tony Lip” Vallelonga, the character played by Viggo Mortensen in “Green Book.” Back in November 2015, Vallelonga replied to Donald Trump on Twitter corroborating a story in which Trump alleged he saw people cheering in Jersey City, New Jersey...