Question: Are William S. Hart and John Cameron Mitchell both American actors?

Context paragraphs:
The Orbiting Human Circus (of the Air): The Orbiting Human Circus (of the Air) is a fictional radio drama podcast written and created by Julian Koster, and published by Night Vale Presents.  It is the fourth podcast to be released under the Night Vale Presents name.  The podcast stars Koster as Julian the janitor, a shy, sensitive employee of the Eiffel Tower who dreams of joining the fictional radio show also titled "The Orbiting Human Circus of the Air", which is broadcast from a large ballroom at the top of the tower.  Listeners of the podcast hear Julian the janitor's inner thoughts as he discusses his situations with The Narrator, played by Drew Callander, an imaginary voice only Julian can hear.  In addition to the conversations in his head, Julian interacts with the staff and talent of "The Orbiting Human Circus of the Air," notably voiced by actors such as John Cameron Mitchell, Cecil Baldwin, Tim Robbins, Charlie Day, and Mary Elizabeth Ellis.  The first season of the podcasts comprised eight episodes as well as a bonus question and answer episode in which Koster answers questions submitted by fans.

Shortbus: Shortbus is a 2006 American erotic comedy-drama film written and directed by John Cameron Mitchell.  The plot revolves around a sexually diverse ensemble of colorful characters trying desperately to connect in New York City.  The characters converge in a weekly Brooklyn artistic/sexual salon loosely inspired by various underground NYC gatherings that took place in the early 2000s.  According to Mitchell, the film attempts to "employ sex in new cinematic ways because it's too interesting to leave to porn."  "Shortbus" includes a variety of explicit scenes containing non-simulated sexual intercourse with visible penetration and male ejaculation.

Rabbit Hole (film): Rabbit Hole is a 2010 American drama film starring Nicole Kidman, Aaron Eckhart, and Dianne Wiest, and directed by John Cameron Mitchell; the screenplay is an adaptation by David Lindsay-Abaire of his 2005 play of the same name.  Kidman produced the project via her company, Blossom Films.  The film premiered at the 2010 Toronto International Film Festival in September 2010.  Lionsgate distributed the film.  The plot deals with a couple struggling to heal after the death of their young son.  Kidman was critically acclaimed for her performance as Becca Corbett and received Academy Award, Golden Globe Award, and Screen Actors Guild Award nominations for Best Actress.  It received a limited release in the United States on December 17, 2010 and expanded nationwide on January 14, 2011.

John Cameron Mitchell: John Cameron Mitchell (born April 21, 1963) is an American actor, writer and director, best known for originating the title role in the musical "Hedwig and the Angry Inch", and reprising it in the 2001 film adaptation directed by him, as well as for directing the films "Shortbus" (2006) and "Rabbit Hole" (2010).

Cameron Mitchell Restaurants: Cameron Mitchell Restaurants is a restaurant company headquartered in Columbus, Ohio.  It owns restaurants under various names, many of which are located in Central Ohio.  It formerly included the Mitchell's Steakhouse and Mitchell's Fish Market brands, but sold both of these concepts along with one Cameron's Steakhouse location to Ruth's Chris in February 2008.  The Ocean Prime concept opened in Troy, Michigan in June 2008 and has locations in Columbus, OH (under the name Mitchell's Ocean Club), Orlando, FL, Phoenix, AZ, Tampa, FL, Dallas, TX, Denver, CO, Atlanta, GA and Indianapolis, IN.  Other locations will open in Philadelphia, PA and Houston, TX in 2013 and 2014.  Cameron Mitchell Restaurants has also recently announced plans to open a new concept in the Short North Arts District of Columbus, OH in 2013.  The company also manages and co-owns a sister company, Rusty Bucket Restaurant & Tavern

William S. Hart: William Surrey Hart (December 6, 1864 – June 23, 1946) was an American silent film actor, screenwriter, director and producer.  He is remembered as a foremost western star of the silent era who "imbued all of his characters with honor and integrity."  During the late 1910s and early 1920s, he was one of the most consistently popular movie stars, frequently ranking high among male actors in popularity contests held by movie fan magazines.

Cameron Mitchell (singer): Robert Cameron Mitchell (born February 15, 1990), professionally credited as Cameron Mitchell, is an American singer-songwriter from Colleyville, Texas.  He is best known for his role on the singing competition "The Glee Project".  Mitchell received attention for choosing to leave the competition, then returning to win the Bing Fan Favorite at the end of the season.  Mitchell says he has been influenced by John Mayer and especially The Beatles.

Mitchell's Fish Market: The Mitchell's Fish Market chain was founded by restaurateur Cameron Mitchell of Columbus, Ohio and formed part of the Cameron Mitchell Restaurants group.  In 2008, the 22 restaurants were sold to Ruth's Chris Steak House (later renamed Ruth's Hospitality Group) for $92m.  In late 2014 Landry's, Inc acquired Mitchell's Fish Market from Ruth's Hospitality Group for$10 million, a fraction of the original purchasing price.  The deal included 18 Mitchell’s Fish Market locations and three Cameron’s Steakhouse units.

How to Talk to Girls at Parties (film): How to Talk to Girls at Parties is a 2017 British-American science fiction romantic comedy film directed by John Cameron Mitchell and written by Philippa Goslett and Cameron Mitchell, based on the short story of the same name by Neil Gaiman.  The film stars Elle Fanning, Alex Sharp, Nicole Kidman, Ruth Wilson, and Matt Lucas.  Principal photography began on November 9, 2015 in Sheffield.

Hedwig and the Angry Inch (musical): Hedwig and the Angry Inch is a rock musical about a fictional rock and roll band fronted by a genderqueer East German singer, Hedwig Robinson.  The book is by John Cameron Mitchell, and the music and lyrics are by Stephen Trask.  The story draws on Mitchell's life as the son of a U.S. Army Major General who once commanded the U.S. sector of occupied West Berlin.  The character of Hedwig was inspired by a German divorced U.S. Army wife who was a Mitchell family babysitter and moonlighted as a prostitute at her Junction City, Kansas, trailer park home.  The music is steeped in the androgynous 1970s glam rock style of David Bowie (who co-produced the Los Angeles production of the show), as well as the work of John Lennon and early punk performers Lou Reed and Iggy Pop.

Supporting paragraphs: William S. Hart John Cameron Mitchell
Answer: yes