Ha! Doubt there's many fluent latin speakers in equity !
I guess its ok as long as they can do a convincing phoney American accent, unlike the reverse case, say Dick van Dyke as 'Bert' doing a 'bloimey Mary Boppins'..attempt at cockney, which always amused me greatly !
I wasn't meaning "Latin", I was indicating using Italians, since they are from Italy, to play Roman parts. How many Italians didvtge BBC use in speaking parts for "I, Claudius"? There were some used in "Caligula" though!
Actually, speaking as an American, Hugh Laurie, as well as several other British actors, do a fairly good job at creating an American accent. There are several American accents and I can think of a handful that are so difficult to understand to begin with it's almost impossible for Americans to create them. First ones that come to mind - Back Bay Bostonian, Bronx/Queens, Appalachian, Cajun, East L.A., Minnesotan and so on. People from those areas are often confused with foreigners from other countries when in other parts of the US. For a general purpose "Amarican" accent they sound pretty good.
Hugh Laurie, as well as several other British and Australian actors do such a good job that when they speak in their native accents many Americans are startled and surprised to find out they are not Americans. I can't remember the name of the actor, but he was on a very popular show here during the '70s and '80s, and I believe he was from Wales. The first time I saw an interview with him I was floored, I had no idea he wasn't from the US!! His accent was so thick the interviewer asked him to switch back to his American accent because too many people couldn't understand him!! LOL