The 41-year-old "Prison Break" actor and screenwriter declined an invitation to attend the St. Petersburg International Film Festival in a letter to the fest's director, citing Russia's current anti-gay policies as the reason for his decision.
"Thank you for your kind invitation," Miller wrote. "As someone who has enjoyed visiting Russia in the past and can also claim a degree of Russian ancestry, it would make me happy to say yes. However, as a gay man, I must decline."
In the letter, which was posted to GLAAD's website earlier today, Miller also states he is "deeply troubled" by the country's current attitudes toward its LGBT citizens, and "cannot in good conscience participate in a celebratory occasion hosted by a country where people like myself are being systematically denied their basic right to live and love openly."
You can read Miller's letter in its entirety on GLAAD's website.
Miller is best known for his role as Michael Scofield in the hit Fox drama "Prison Break" (2005-2009). He also wrote the screenplay for Chan-wook Park's 2013 horror-thriller "Stoker."